Opt out

[Sg5]

Hello!How I can opt out my big bundle?

Thank you.

[pgn]

You can change once a month: 

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

If you want to opt out altogether, and so long as you have not set up to charge to a card automatically, and you have 0 balance, just stop using the SIM when the month is up. Note you will also lose the number, if you do not make a chargeable call at least once every 180days. Good luck.

[MI5]

@Sg5 

You can't opt out of bundles as that is all O2 offer.

To get basic old fashioned PAYG you need to change networks.

Look at giffgaff or 1pMobile