Hi there.
I'm afraid that account bans are not something we can investigate here on Answers HQ. The Terms of Service team would need to review your account and determine if the ban could be overturned. Please reach out to them when you have a chance so they can take a look.
For more information on how to set up a case with them check out the EA Help website. The TOS team will follow up with you via email as soon as they can. They review these appeals on a case-by-case basis, so I'm afraid we don't have a time frame on how long the investigation may take. Keep an eye on your email for a reply, and they'll get back to you as soon as possible.
/Kent