Forums mIRC Help need help reporting an MIRC member

I am an op in a room in MIRC and recently another op decided to put a gamebot in the room. someone who supposedly is a repair person for the bot knows 10x more then anyone about MIRC and even knows how to crash your PC and everything else. He tried bugging some of my members and i told him to stop and the started saying "F You" to me so i banned him. ever since he starts renaming himself and freezing my PC and crashing it etc. I reported that to the owner of the room and he unbanned him saying to wait and see what he does. Today he came in the room and i said nothing to him and he threatened to either let me in his PC for 5 minutes or he'll do it again. he's frozen my PC 2 times today so far. his name is Notty. Is there a way you can ban him permanently? he takes on different forms of the name Notty so i know it's him. Please help.