Forum:DLC deleted. help?

I have the PS3 game of the year edition of Borderlands and played it extensively. 3 of my characters are level 69 with full banks of orange and pearls at moxxi's. recently on a brick profile, i was loading the Arid Hills when a message appeared stating...

"The game data is corrupted. The game will close. You must delete the game data to play this game."

exactly worded like this. i took a picture of the message on my tv and sent it to one of my buddies expressing how unfortunate my situation is. needless to say, i was upset. so i went out, deleted the game data and reinstalled it overnight. i start up borderlands the next day and decided to farm crawmerax, but none of my dlc maps are at the new u station. i exit out and there are no dlcs present. i attempt to put in the voucher's code but it was used up from the first time i put it in. i checked my list of downloads and they arent in the list. i really dont want to spend $30 on buying all the dlcs if i can just recover them from somewhere in my system. please help! i want my whittings elephant gun from moxxi's!!