I want to just come in here and say dont stress it. I hope when that loser made toons on your server you just didn't reply. If you don't want to fill your ignore list, just say they are spamming you.
Also I believe they are changing the whole "3 of them same item dropped and the same toon won 2-3 of them".
But honestly, don't stress it hon! You can only get more upset if you let this situation make you upset! And I mean that for anyone that has been in this situation, myself included <3