Eorror 8003 keeps coming up for The Dark knight rises... Was told to delete it and download it again.. but now i cant find it in Purchases.. what i do now? :S

Basically i bought The Dark Knight Triolgy. Only the Dark knight downloaded ok and was the only 1 watchable. the other 2 kept saying "error 8003" while downloading. i spoke to someone @ the Apple store and he said to delete it and download it again. but i did that and now i cant find it on my purchased movies. but it is visable on my account..

How do i get it back and secondly how can i download it again..

Please help!

Thank you : )