Re: What should I do if I found my account banned.
Sorry to hear about all of that here are some helpfull links.
First you will need to recover the hacked account.
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/
After that if need be submit a ticket to dispute the ban.
If you believe that a sanction (Suspension/Ban) placed on your account was by mistake you should reach out to the Terms of Service team https://help.ea.com/za/help/account/information-about-locked-or-banned-or-suspended-accounts/
best of luck.