What should I do about this movie?

I bought "The Hangover Unrated" from bn.com and on the box it say
"2-disc special edition." Includes both Theatrical and unrated version
of the movie. It only came with one disc. The unrated version. I am
wondering if I should worried about not getting the other disc. I
don't really want to return the movie. It cost me around $26.

What should I do?

Thanks for your help and answers!!!!!!