You can open an in-game ticket under harassment to get a hold of a GM to handle the issue, but keep in mind that this is a PvP server. Last night there was over 8100 players at peak and camping players is not against the Terms of Use(viewtopic.php?f=2&t=8). Don't expect a GM to do anything more than warn the player, if necessary. Now, same faction griefing and players using an exploit to excessively kill you is against the rules and sanctions can be handed out.
Same.