I have killed it , 901 ilvl with KJbW and Aggramar , BUT , i did not get the quest completed. I have screenshot near the dead boss , but still blizzard will not give me the kill beacouse there is no kill in their logs.
http://imgur.com/a/2G2ST
They do not want to admit that the problem is on their side and the kill is legit ... good customer support ... makes me want to play the game even more