My bill

[Suzannewoo]

I pay monthly and have done for years with the same number but cannot access my bill and it won’t let me join my o2

[MI5]

@Suzannewoo 

Can you log in online https://mymobile.o2.co.uk/ ?
If so, try deleting the app, rebooting your phone and then reinstall the app.
We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you with this
Thanks

Guide: How to find help & contact O2 

Guide: How to Pay Your Bill (Contract)