You do not get punished for another player's behavior, only for your own. If you were banned by the Instant Feedback System, then you will have received a reform card in the client with chat logs from 1-3 games. If you wish to have a discussion about your ban, would you mind posting those here?
Something to keep in mind is that what other players say/do does not excuse your own behavior. If someone on your team is feeding, yes that sucks and is frustrating, but that doesn't mean you can start yelling and flaming that player. Doing so does nothing to help the situation.