One, GT is their own server. They can do what they want with their admin powers, so coming here to do anything except bring abuse into the public eye (which has been done again, and again, and again...)
Two, if you want to raise any complaint, you need either a demo or a log to prove what you say is true. Use the 'condump' command to get a text log of the console next time.
Three, GT's an interesting place. They run pretty poor server settings, have horrible admin abuse issues, and generally tend to put their own server's popularity ahead of advancing the game or providing a pleasant experience for the players. The most you can do to protest is not play there, unfortunately (Or get others to boycott them as well). But honestly, that won't accomplish anything either given the sheer volume of new players that spend a couple moths playing the game, knowing nothing about the community or anything. You can't stop them.
A lot would happen if GT just disappeared one day.