Quote Originally Posted by 'Steph',index.php?page=Thread&postID=98759#post987 59
EU

Quoted I have concerns about a particular Game Master. Who can I talk to about it?
If you have problems with a Game Master, please email WoWConcernsEU@blizzard.com.

http://www.wow-europe.com/en/support/gamemasters.html
US

Quoted Rather than disobeying in protest against the request being made or the action being taken, please oblige him/her and later express your concerns to the wowgmfeedback-us@blizzard.com email address. Emails sent to this address go directly to the Senior and Lead GMs, who will investigate and address any instances of potentially inappropriate GM actions.

http://us.blizzard.com/support/artic...s&pageNumber=1
This is very good advice.

Make sure you very politely but very firmly make clear that this GM has been harassing you unjustly on more than one occasion.

Furthermore, I would open a thread on the official customer service forums (without naming names) to let the other GMs know that you are being harassed by a "blue". Make it public, but polite. Blizzard does not need negative feedback from their "law-abiding" citizens but in this case they deserve it.