@180219120121
Sounds like you may have been hacked.
You will have to recover the hacked account and associated e-mail before you can do anything else.
If you believe you have been hacked take appropriate measures to secure your account and associated E-mail account https://help.ea.com/en-gb/help/account/secure-hacked-ea-account/
Once you have done that you should contact the TOS team about the ban.
https://help.ea.com/za/help/account/information-about-locked-or-banned-or-suspended-accounts/
After that you may have to contact an EA advisor via EA help about the account link/de-link.
Contacting EA help https://help.ea.com/help/faq/using-ea-help
I know it is a lot of steps, but alas I do not work for EA and do not know any other way.
Wish you the best of luck.