XBL is really screwed up tonight. I went on to Marketplace to redeem my code for the map pack(token came with the GOTY edition). After typing in my code, it said it was valid, tried to download it, and I got an error. After a few tries, I gave up, figured i'd try in a bit. So after a rock band session, went back in, and now the code is invalid! It is not showing in my download history, and marketplace wants me to spend the 800 points! What do you suggest I do, who do I contact? 
http://gameoftheyear.callofduty.com/images/us_landing_04.jpg

http://gameoftheyear.callofduty.com/images/us_landing_04.jpg