Kinda the same happened to me, I laughed to something he said in Italian that I understood, and his answer was "you don't know what I'm talking about so shut up", I know it's nothing (that's why I didn't say anything) but it shows he's rude towards everybody, not only players who provoke him.
I say correct the ban length to 1 week as joeee wanted it, and what we do with the other players is none of your business, report instead of breaking the rules even more than the others just to think you're better than the others.