If I get banned from a game and my team wins, do I get a win?
If you get kicked/banned from a match it counts as a LOSS regardless of the result of the match. So that means you can even rank down because you got kicked.
A kick or an abandon is almost always detrimental to your Elo/rank. It is either as severe as a loss or worse. However, there is one scenario in which a kick will result in no detriment: if 4 individuals are lobbied up together and they decide to kick you, you will not receive any penalty as either a ban or a negative effect on your rank.