Long story short:
First DLC code timed out and said it was already used. Second DLC code I got from Gamestop after the first one, said that there was no content even after I visually saw the 6 items I was about to download.
Gamestop said to come here after I called them back right after the new code was used.
New I should have used this **bleep** code right off hand instead of letting SC2 take my life for a week.
Which promo code? For the collectors edition? If that's the case check this thread here:http://community.us.playstation.com/t5/God-of-War-
If that's not what you are looking for others have been having the same issue and are talking about it in that section of the forums as well as this one:http://community.us.playstation.com/t5/God-of-War-
Good luck warrior! See you in the arena!