Hello radiohead_s1,
Welcome to the Apple Support Communities!
I understand that you purchased two items from iTunes as gifts or using gift credits, but are unable to download the songs that you want to get. In this situation, I recommend reporting the issue to iTunes directly by using the link in the following article.
Report a problem with an item purchased from the iTunes Store, App Store, Mac App Store, or iBooks Store - Apple Support
Have a great day!