Problem with Great Vault

Hello, I have a problem with the loot of the Vault, I got a tank item, a polearm. This is not the first time, is the second. But the first time i took the item and a GM told me, once you took it is yours. So this time i sent a webticket and now a GM is telling me to play another spec :laughing:
Its so funny, i play with a loot of toons and now i need to play the spec according the items that i get !!!

I need support !!!

thanks you…