Refund

[mebius]

Can I do a refund from my O2 balance?

[pgn]

If on Contract/Pay Monthly, yes, from your web version of MyO2, @mebius.

https://accounts.o2.co.uk/signin

PAYG refunds only possible when porting out or switching to Contract from PAYG.

[mebius]

What if I am using Pay As Go?

[pgn]

As mentioned above, @mebius -

Refunds are possible under some circumstances but usually only when cancelling a PAYG contract with a PAC to another network OR if you transfer to a monthly contract with O2.

[MI5]

Answered here @mebius 

https://community.o2.co.uk/t5/Pay-As-You-Go/payment-method/td-p/1744339