Halo 4 Limited Edition Pre-order help!!

I don’t know if im posting in the wrong place or not but a Moderator from 343 industries sent me here to the forums. He told me that i needed to contact a 343 worker here… but anyways my problem is Whenever i pre-ordered halo 4 Limited edition from Gamestop i did not recieve any of the DLC that i was told was supposed to come with the game they told me i needed to contact 343 about it because there was nothing that they were able to do. So i went to 343industries.org and the Moderator sent me to the forums on here. Again if im in the wrong forum could you please send me to the right place? Im just trying to find help fast because i’m not really sure what to do. thanks…