How can I cancel an old contract when I don't know the phone number or account number?

[NickB85]

Hello,

Some time ago I took out an o2 pay monthly contract, but I did not end up using the sim.

I recently realised that I have been paying for this contract ever since, but I can't cancel it as I don't know the phone number and have no records of an account number.

Is there any way I can cancel this contract? 

Thanks. 

[gmarkj]

You would have to get in touch with customer services to find out @NickB85 , which would include passing any security checks.

If you have the login then you could get a PAC/STAC to get the account closed, but if not then calling (or using social media) is your only hope - but even then they may ask what number you are calling for.

Guide: How to find help & contact O2 

Guide: Cancelling Your Contract 

[MI5]

@NickB85 

They must be able to trace you through a name and address.

If you still have the sim, you can put it in a phone to get your number and account details 

Guide: How do I find my own mobile number? 

Guide: My O2 App 

If you get no luck from customer services, complaints may be able to trace your account.

https://www.o2.co.uk/how-to-complain

[Oxonian]

@NickB85 

If the suggestions of @gmarkj and @MI5 do not resolve this, I suggest that you contact your bank.

You want to obtain the the unique transaction identification number of your most recent payment to O2. It will be a sixteen digit number.

If you provide that to O2, they can search for your remittance in their accounting records, which will then give them a link to your account.