Hi NizBotIO,
I totally get that the ban seems like harsh, but unfortunately this can happen when using chat, so you need to be careful that what you're saying won't be seen as harassment and so on. Chat is monitored in this game and other players could potentially report you as well.
However, to answer your question, all actions under the Charter are handled by the Terms of Service team. They're also the people who you would contact if you want to appeal the ban. If you haven't appealed already, the guide below has a link that will let you contact them:
https://help.ea.com/uk/help/account/information-about-locked-or-banned-or-suspended-accounts/
Moreover, if you feel that another player is not behaving correctly, you can report them either in-game or through EA Help:
https://help.ea.com/uk/help/faq/report-players-for-cheating-abuse-and-harassment/