Here's a nice way to solve this. Click on the following links, then look for the "Add <name> to Your Ignore List" link and click on it...
http://forums.bots-united.com/member.php?u=2511
http://forums.bots-united.com/member.php?u=3015
http://forums.bots-united.com/member.php?u=3016
Usually whiney little cry babies can't stand to be ignored. When the asshat(s) register with a new account, just add them to your ignore list as well. Eventually they get tired of being ignored and go away.
botman