Multiple account

I've been going back and forth with Account Health for nearly 2 weeks who have deactivated my account as they say I have another selling account. I haven't started selling on Amazon yet. I created an account and have had my ID etc verified. I can't find any details of having another account anywhere and whenever I submit information via 'submit an appeal', I get the same standard response 'we don't have enough information to reactivate your account'.

Each time I raise a support case with Amazon Account Health team to get some more information regarding the situation (i.e. I can't see/find any details regarding having another account), I get an auto response email saying I need to submit information via the Account Health submit an appeal system on Seller Central. I've done this numerous times but I'm not getting anywhere. I could really do with speaking to someone to try and get to the bottom of the issue but there doesn't seem to be this option for Account Health.

Please please help. I really want to get my account reactivated so I can start selling. All I need to know is where I find this imaginary other account that I supposedly have.