I was an administrator on one small RP community ( SA:MP )....
Players always try to help catching a rule breaker or a hacker,and I'm certain they do it here too.....
There is no such thing as an incorrect ban..like JDC said,there can be an incorrect command or incorrect ID...never a false ban...
It never happened to me as the players would PM me if they knew a hacker or an abuser as I would encouraged them through /announce that they use my PM for a purpose...I would politely /watch the player and zap.../ban..No mistakes,cold blooded efficient ban
So don't ever say there are incorrect/false bans