As customers like yourself, all we can advise is an official complaint
http://www.o2.co.uk/how-to-complain or Google the CEO's email and report it to him to see if they can intervene for you.
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)