There already is one.....
If you have problems with these people in future, click on the "Chat" tab in-game (or connect to irc.arloria.net with your own IRC client) and join #tribes (or #the_construct if you want someplace empty)
As long as BC is up, I will be in there, and do check messages every few hours if I'm not at the keyboard, so can have a look the next time I'm around if you leave a message. Don't bother asking if I'm there, just say what you need to say.
There are fairly regularly other admins from the server idling in there, so you might be able to pick someone else up if it requires more immediate action.
From a check from the past week I've picked up the following, but there may be more that don't match up with the criteria if you guys haven't reported everything.
IPs 188.8.131.52, 184.108.40.206, 220.127.116.11 and GUIDs 2610148, 2610181, 2617365, 2617425
Remember that everything that goes on in the servers is logged, and unless you see an admin tag in front of their name, all they can do is report an incident and have it investigated... if you did nothing wrong, you have nothing to worry about.