on 10-09-2024 12:00
10-09-2024 12:03 - edited 10-09-2024 12:05
10-09-2024 12:03 - edited 10-09-2024 12:05
That's how rolling plans work.
Money is taken from your card every month to renew it. Manual top ups just add credit.
All covered in the T&C's Pay As You Go: Introducing "Rolling Plans"
https://www.o2.co.uk/help/pay-as-you-go/rolling-plans
If you want to top up yourself, you need to switch to a big bundle.
https://www.o2.co.uk/help/pay-as-you-go/big-bundles