Novice Network is full...

[Malzian]

There should be an option to kick trolls and give them few hours of penalty. For the green leaves the penalty is shorter.

Yeah, there is, straight from the patch notes:

Removing Players from the Novice Network
In cases of spamming or harassment, a mentor can kick another mentor or a new adventurer from the Novice Network channel. Kicked mentors cannot return for three hours, and kicked new adventurers for thirty minutes. Please be advised that, in doing so, your name, the name of the player being kicked, and the reason will be displayed to everyone on the channel.