Hey @peppaju,
I'm afraid we're not able to make any changes to account information on the forums.
We'd need to first verify some information about the account(s) in question, so for this you will need to reach out and try speaking with an advisor again.
You can find more information on how to reach them over at the EA Help website. If you prefer you can also speak with them over Twitter or Facebook instead.
While you're going through that process to speak with someone, I would also strongly suggest going through these security steps to make sure no one else still has access to the account.