Your ban was just for the following reasons:
A) I have zero evidence of this user's trolling ever happening, nobody has reported him, nobody has presented demos/logs, etc.
You were the only person repeatedly attempting to !rep him in the lobby, not a single other person attempted to do so.
Check the logs for proof of point B: http://logs.tf/1857029
In the event that you truly feel that the player playing medic in this lobby has a history of trolling, submit a report against him with lobby IDs, logs, and/or demos so that I actually have a method to punish said player for their actions. I'll gladly hear your side and review all evidence brought against the user should this occur.