I assume this is the complaints process you have followed?
http://www.o2.co.uk/how-to-complainMaybe an email to the CEO is in order?
It's the only way he will find out just how bad CS is these days.....
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)