What the hell is this discussion about? This is kindergarden level of "I didn't do anything!".
If you think that you were unrightfully banned, then ask for an explanation. Yes, it sucks to have those vague reasons, but saying "you did a little in this one game and were kind of an ass in that other one and then this player over here, too, felt like you were abusive..." isn't really helpful either.
You didn't get banned for no reason at all, i'm sure, and if you don't even
notice how people get offended by your behaviour, then you
need to be made aware of it.
So, you're welcome to ask for the exact situations if you cannot identify them yourself. If you know which situations are the issue but want to complain, you should link us to the game(s) to let others judge. Nobody will buy your "I did nothing and just had fun and was banned for it" story.