on 18-04-2020 11:05
on 18-04-2020 11:08
So many systems are having issues currently. They right themselves eventually, so it's worth a wait and try again.
If you need to contact O2 there are various numbers in this guide
Guide: Coronavirus Community Help and Support
Veritas Numquam Perit
on 18-04-2020 15:10
on 18-04-2020 15:10
Have you tried topping up with a voucher?