What are Game Master for in this game?

[Bahamut]

Today in Dynamis- Beaucedine 3 (supposed to be) Japanese (named Chongong, Broliono and Wqkun) camped over me like they did the last days in the past week. And it's getting worse and worse. But today atleast one of them stepped over a border.
It started when one of the other group and me provoked an orc and i got the claim.
They kept running around/stand beside me and we tried to claim any mob we could for currency. When my pet fought a PLD Orc and i fought a THF Orc, Broliono acted bold and attacked the one i was fighting as it got unclaimed for a while cause my pet hit the PLD Orc. He didn't stop until i did 1000+ damage with Ruinator.
The Game Master i called said he does understand me, but he can't help cause they totally act within the game rules. Even in areas with a time limit like in Dynamis.

So, if GMs can't take action on character names that are named after drugs, names with sexual or historical explosive content, if they aren't written in an official supported game language, or cause a group of people ruined your game like the group did on me, then what is the use/the purpose for Game Masters in this game anymore? They can't just be there to save us, should we get stuck in a glitch and forgot any chance to warp away.

This is hilarious, when I was first starting to play FFXI, I played a whm tarutaru in those days, and a JP group came in on goblins inside a cave we were camping in, think it was one of off branch caves, and they showed up, camped on top of us, pulled goblins over and let the bombs hit me right in the back of my tarutaru head, they litterly would mpk me and laugh at my dead body, it was so leet cause we tried so hard to pay them back and it never worked. Those JP knew just how to mpk and obviously found it funny as hell that we got mad in english.