/ Technology

Ask Which? – What can I do about my high mobile bill?

Woman reading bill looking shocked

Emma asks: I’m always worried about my phone usage, so every month I get a text saying I’m coming close to my data limit so I know to stop using data. Then, this month, I checked my usage online and was really shocked.

My bill had racked up to more than £12,000. Orange says I used 5GB of data.

I really don’t understand how this could happen, and how Orange could let this happen.

I’m waiting for Orange to contact me again, but I’m not expecting any change in the bill. I don’t know what to do.

Catherine West, our telecommunications expert, responds:

What a horrible case of ‘bill shock’, and sadly, you aren’t alone. Research by Ofcom this year showed that 6% of UK consumers received an unexpectedly high mobile phone bill over the past 12 months, with 18% of those people receiving a bill of over £100 more than expected.

As customers, we have to take some responsibility for keeping an eye on our usage, but I don’t think it should be possible to run up bills to this amount without intervention. Ofcom is looking into the issue of unexpectedly high bills at the moment and is due to release a statement in early 2012.

In the meantime, if you receive a bill for data usage that’s much higher than you were expecting, first look at the terms and conditions of your contract. See what it says about how much you can download, and if the costs charged for data above your limit are clear. You can also read Ofcom’s guide on what to do when you receive an unexpectedly high bill.

If you don’t think any of these things are clear (especially if you’re on a deal where ‘unlimited’ data usage has been advertised with restrictions hidden in the small print), it’s worth contacting your provider to complain and see if they are willing to cut the bill or, if this is not possible, allow you to spread the payments.

If you aren’t happy with the response from your mobile provider you can contact an independent Alternative Dispute Resolution (ADR) scheme (PDF). There are two in telecoms – CISAS and the Communications Ombudsman Services – so you’ll need to find out which your provider belongs to.

Both have a number of powers, including asking the company to offer an apology or explanation or up to £5,000 in compensation.

The best of luck getting this sorted out, I hope you manage to find a resolution with Orange.

Have you ever had a bill that’s been unfathomably high? Does your mobile company always let you know when you’re getting close to your allowance, or could they be better at helping you manage your usage?


I think a lot of this is down to inaccurate billing by the mobile networks. My data usage is usually around 200MB to 400MB per month, but one month my Orange bill showed that I had used 916MB when my iPhone’s built-in data counter had recorded that I had used only 404.5MB (370MB downloaded and 34.5MB uploaded). Orange’s customer service system showed that I had downloaded large quantities of data during short daytime periods on two days in the billing month, which if true would have severely drained my battery, but it hadn’t done so because I didn’t use the data. Also there’s no way that my iPhone could have physically downloaded the alleged high quantity of data in the short periods stated. Fortunately I had not been roaming and I was just within the 1GB fair usage allowance so there was no cost or other implication. Nevertheless I asked Orange to investigate several times and made sure that copious notes were made on my account in case the same thing should happen in future more excessively or when I’m roaming, but they failed to investigate. Unfortunately many other customers end up significantly out of pocket when the same thing happens; I was one of the lucky ones. I’m sure the networks know all about these data billing errors but won’t admit it.

Catherine says:
4 January 2012

I have just realized that Orange have removed my Premier Service without informing me! I realized when attempting to contact customer service to report poor connection for all of November…still not resolved………..nearly four hours to various call centres still no resolution..promises of return calls to deal with complaint….nothing…..Oh apart from a text informing me they are going to charge me more for less!!!!!! Any good phone service out there?

Just to say that Catherine did a good job of helping the person mentioned in our Ask Which? get their money back from Orange. The £12,000 was written off, with added compensation!

‘I received a phone call from an Orange manager apologising, also once the £12,000 is taken off my bill he will arrange some compensation. I was offered £30 by a customer services adviser, but I turned it down explaining for the trouble I’ve been through it wasn’t good enough. That’s when it was passed onto a manager. Now I’m happy.’

Richard Owen says:
29 September 2012

I have been an Orange customer for 15 years. 5 years ago I became an Orange Business customer with 2 telephone lines. In that time my phone bills varied but never exceeded £150pm approx. Two months ago I added my wife and daughter to the account (so now 4 telephones) and we purchased 3 new iPhones – the first time any of us had used an iPhone. Within 30 days calls from my daughter’s and wife’s telephone had been blocked. I called Customer Services to find out why and they explained that a bill of £10,572.96 had been run up between the 2 accounts. I was terribly shocked and discussed with the representative how a bill of that size was possible. It was, of course, from data downloads. What had not been explained at the time of purchase was that to guarantee downloaded data only comes through a Wifi connection the button “cellular data” must be switched to “off” in “Network Settings” – we had been in an area where the Wifi signal was only intermittent and without our knowledge the phone was downloading data via the cellular network when the Wifi dropped out. Orange reduced the bill down to £600 ( £300 per handset) claiming this figure has been agreed by Ofcom, and while I have some gratitude for the reduction I cannot help but feel extremely hard done by.

Given my consistent spending pattern over 15 years, why is there nothing in place for a telephone company to block my calls (in the same way my Credit Card company block the card if they observe an out of the ordinary purchase) to warn me about a bill that is inconsistent with my usual pattern? The Orange representative I spoke to proffered the explanation that to block calls could impact on their business customers who were in the middle of a presentation that involved the downloading of data, and to do so could potentially impact on their business – yet when arriving at a figure of £10,572.96 they did indeed intervene. An arbitrary (and exorbitant) figure to say the least.

I asked Orange for details of where and when these data charges were incurred but they have not provided me with any information to date.

Could someone advise me if I have grounds on which to contest this £600 figure? I would also like to know if Ofcom have indeed set a figure of £300 per handset as a minimum charge for disputed bills.

Jillian Simon says:
19 October 2012

I need help with my bill shock £9400.56 from Orange for one month on my business iphone I have a 1GB monthly plan but I only ever use on average 400MB. They say last month I used 5.7.GB they gave me specific dates so I know what I was doing on these dates (working 12 hour shifts). They were not helpful on the phone, first call they said they would credit note me for £8996.00 but I said this must be an error as this means I still have to pay over £400.00. I went into the store they checked my phone and orange said they would give me a credit note so I only had to pay for the first £300.00. I told them there must be a fault somewhere and I would like it looked in to they said they wanterd me to agree to this credit note straight away, when I said I would need to discuss it with my business partner first they informed me the goodwill guester of a credit note had been withdrawn and I was responsible for my phone and the full bill. Needless to say I was upset in the orange shop and I haven’t been able to sleep since. Please help me

I got a large bill from Vodafone for high data usage. The bill states that i ended up using 40GB of data in a month! I dont understand how this can be possible when i only used the phone for emails.
Vodafone have done a recalculation of the bill and came up with no issues. I have contacted Ombudman services as well and even they’ve come back with a conclusion that this is my usage and i should pay the outstanding dues. I have constantly been asking for the details of data usage as to what exactly used so much data. But they have failed to give me a response for this.
I also asked for information on whether they can provide me the information about mobile phone masts that my phone must have linked to to get access to network, and all they came back with was that they’ve never been requested for this information before! I read the data retention directive which clearly states that the network provider should hold this information for 12 months!
I am not sure what i should do next. They have about £1100 worth of bill outstanding against my name. Does anyone have any advice for me?

Sabrina says:
9 April 2015

Hi, this exactly happened to me though they told me I used 11GB in 1 month and I got charged £231 for data usage from Vodafone when I clearly haven’t. How did you sort this problem out? Thanks

Arlyn says:
15 July 2014

I have been an Orange customer for 7 years, my bill was supposed to be £40 a month but I always ended up paying 100£ or more. With a minimum wage paying job this was stressing me out big time. However I wanted to build my credit and I knew paying my mobile bill was one way to do it. My bill was high because I always managed to go over my mins. Anyway,in May I decided to cancel my contract and go to Virgin mobile. Orange wouldn’t let me cancel and they promised me a deal of £15 a month for unlimited calls to any UK network, unlimited data and unlimited text withouth fair usage like Virgin. I jumped for the deal but it never happened. I got a bill of 53£ which I contested and was told that I would only have to pay £15 because my plan had been changed. Today and this is the kicker, I check my Orange bill and I owe £369.10, that is more then my rent. After screaming bloody murder, they charge me the 53.03 for last month and 43.48 this month and say they will credit me £272.59. They tried to offer me the 15£ deal saying they have put it ontheir system and they donknow why I am not getting it. I told them the deal is a lie and I want to cancel my contract. They have given me the PAC code but I am worried that they will try and get the £272.59 and ruin my credit. How can I be sure that I am done with Orange completely?

Vodafone are terribly overpriced says:
27 November 2014

Did you hear about the guy who racked up a £91,000 bill with vodafone for calling a sex line when he felt lonely after breaking up with his girlfriend? Made me feel slightly better about my £200 bill with them!

[We have removed the promotional link. Thanks, mods.]

Had a shock Vodaphone bill of nearly £500 for my 16 year olds mobile phone bill. What can I do, they say its up to us to keep an eye on the charges. I put a cap on it but was told they no longer use them so when I didn’t get any warnings I think her bill is ok. However this time it wasn’t, she’d racked up most of the charges in calls.

Can you tell how you got this resolved. We are still having an issue with Vodafone re this as our daughter did exactly the same. We have been disputing it for 5 months now!

Candy says:
12 February 2015

I have just finished my 24 month contract with Vodafone in January. Yesterday I got the shock of my LIFE by receiving an extra bill for £404.56 from Vodafone. My contract was only £39 per month!!! I have been having this problem with high phone bills with them for the last 4 months, on average the bills being anything from £100 – £150 per month for 4 months! Constantly I fight with their customer services about this – as I don’t do anything different with my phone than when I normally get my bill for £39 per month. They have informed me throughout the four months that I have been exceeding my usage of data and have been charged for same. Now This bill for £402.56 – I am absolutely furious as firstly I don’t have access to that kind of money (so now my credit rating is going to be affected if I don’t pay – yet I maintained my account for the last 2 years) including paying the overly priced bills, in order to maintain my credit rating. I just don’t know where to turn for HELP or advice, as it seems that there is no limit or explanation as to the charges that they incur against your name. This is pure daylight ROBBERY!!!! IF ANYONE HAS ADVICE OR TIPS OF WHAT I SHOULD DO TO PLEASE ADVISE. MANY THANKS. CANDY

Woah, that’s a shock payment Candy! It’s best to get in touch with Vodafone straight away, explaining which charges you think are incorrect and why. Send a written copy also, highlighting the disputed charges and why you think they’re wrong. It’s good to keep copies of this correspondence, too.

If they decides not to refund you, and you feel that the charges really are unfair, or were not made clear, then you can take your complaint to an Alternative Dispute Resolution scheme. There are two approved schemes, CICAS and the Ombudsman Services:


I have started using an iPhone with a pay as you go sim with no data. I have been only sending texts and calling within my allowance. the last two months I have had extortionate bills despite not using the internet or any apps etc at all. they claim it must be my phone settings sending the texts as imessaging. anyone had experience of this?

When I log into my account on the service provider’s website I can see every phone call, text message and use of data, recorded with the time and dates. Your service provider should be able to explain the bill and hopefully establish there was an error.

Leyna says:
3 November 2016

On the first day of using my phone I got a text saying “0 MB remaining” and I had been on the home wifi all day. At the end of the month I get a bill for £70 or something. And I get really hacked off because that is so clearly wrong

The new month started on 16 October and it is now only 3november and I decided to turn OFF my data Just In Case. My parents checked today and I had already racked up £40 . We can’t login to the talk talk website because it isn’t letting us in with the login details. I don’t use my data but I do use the wifi a fair bit.
I didn’t think wifi used up data but I am starting to question myself

Mrs A says:
11 May 2015

Hi, need help urgently my dad has been with Orange for about 15 odd years. He is on a plan where he doesn’t pay line rental just the amount he uses. He rarely uses his phone his bill has always been under £10. Recently he received a bill for £425.00 then another for £168.00 to say we were in shock was an understatement! He is disabled and has shown me the bills when I came back from holiday. Tried calling Orange to rectify and they said it’s possibly to do with data usage. He hasn’t had his 3g, cellular data or anything switched on apart from wifi. He doesn’t use the Internet much apart from browsing for a very short time and that is only at home connected to wifi. Orange haven’t done anything on this matter they are supposed to call back its been 2 days and nothing. We are obviously very stressed out. Please please help.

Hi Mrs A, thanks for your post and I do hope your father’s alright after receiving that high phone bill! I’ve commented above with a few solutions that I’m certain you’d find useful – It’s best to get in touch with Orange/EE, keeping all records of written communication.


If nothing’s been resolved to your satisfaction, you can then take your complaint to an Alternative Dispute Resolution scheme. All network providers must belong to either of these two schemes, CICAS and the Ombudsman Services.

Angel says:
15 December 2015

I have a contract for £7.50 per month and it has now exceeded to £219.89 they say i have used more than tons of mobile data but I haven’t will I have to pay this bill or will they reduce it plz answer ASAP…