Unable to change contact number in O2 account (accounts.o2.co.uk)

[ChrisF80]

I joined O2 around a month ago and when I tried to register my online account, it said the number I was trying to register with is already in use on another account. I believe this issue may be due to previously having a business account with O2 for the same number which has long since been ported away. As a temporary resolution I used my work phone number as my contact number.

I still however cannot update my contact number in my account. I've tried calling O2 numerous times over the past month, I've tried Facebook, I've tried Twitter, and I tried PM'ing a mod after they were talking to me about another issue. Still no resolution.

Currently the contact number has been changed to another number on my account (my wife's) however I want it to be mine.

Can someone please assist.

[MI5 · Accepted solution]

@ChrisF80 

Only customer service can help.

You'll need to keep trying the same ways you have been until you get someone who knows what they are doing.