The in game report/chat ban system is broken and open to abuse, but OP, your situation looks more like a subject that you should take up directly with WG Support, their logs will be able to tell you exactly why and which language the ban refers to.
May be our system have some issues and we are working on improvements, but generally it work as intended. It helps to suspend abusive behavior in chats. If you have any questions about your bans - please contact our support. It's the only way to investigate your situation with a chat ban.