Since I always make screenshots when I ban someone so I have proof, here are they:
The logs.
The shot logs.
While indeed, it you have not fully killed Potato and williamhewett, you still attacked them for no reason and most likely ruined Potato's traitor round. The people in the server were complaining about your behavior in that round and therefore I checked the logs to see if you had actually RDM'd and you did. 3 day ban is fair imo, shouldn't have attacked anyone and just left or you should've waited out your punishment because you knew you were going to get warned/slain.