Cannot update any information on my profile

Hello,

I have an issue, where if i want to update any information on my battle.net profile, i get the message to contact customer support. I couldnt even cancel my WoW subscription, which was resolved by pausing it, after i wrote to customer support.
However, i still need to resolve the issue about not being able to verify my email address or update information. Also, i cannot remove my payment method for the same reason, which is probably the main issue i have.