Change tariff with balance

[Alemap]

I’ve topped up my phone trying to change the tariff to £20. I’ve not got cash I. Bank and it seems I can’t use my balance on he is this? Can you help?

[jonsie]

You need to contact customer service

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 using the links below, they should be able to help you with this
or give them a call on 4445

Guide: How to find help & contact O2 

[Oxonian]

A warm welcome to this O2 customer to customer community @Alemap. 

You cannot use the balance on your PAYG "account" on a Rolling Plan :- 

Rolling Plans | Contract Free Sim Only Deals | O2

https://www.o2.co.uk/rolling-plan#get-a-rolling-plan

However, you can use those funds to buy a Big Bundle :-

Big Bundles: Eveything you need to know – Help and Support | O2

https://www.o2.co.uk/help/pay-as-you-go/big-bundles