@Alimay
You need to give it at least 24 hours and reboot your phone.
Numbers to call O2 here Guide: Coronavirus Community Help and Support
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion.
This is not Customer Service so we are unable to help with account specific issues.Currently using:
Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)