Isn't botting on blizzard games in general asking for a ban? Unlike FFXIV where unless you participate in rmt or you are an ass to people, you shouldn't get banned.
Well, if you were banned you must have been too obvious when using the hack. You knew the risk, you took the chance, you got cought, deal with it. It sucks, I know.
I think that cheating in Overwatch is a bad idea by default. The game is way too sensitive to getting caught. Killcam, play of the game, and with Shadowplay you are easily recorded. It's going to be a waste of money to cheat in a game with ban rules this strict.