Purchased Movies Disappeared

I purchased movies over 5 years ago.  In May when I went to download some movies I purchased they were gone.  Working with Xfinity technical support they were able to make the purchased movies reappear.  On July 29th I wanted to watch one of my purchased movies and they were gone again.  Back on the phone with tech support, they had me do all their trouble shooting steps again to no avail.  I was told they would give this issue to their Advanced Technical Support and I would hear back within 10 days...that didn't happen.  I called again on August 14th, went through all the same trouble shooting steps; they finally transferred me to the "Advanced" Technical support.  They never were able to help me, and ended up yelling at me insinuating I never purchased any movies.  I found an old account number which I'm hoping will help you find my purchases,

[Edited: "Personal Information”].  Googling my issue I discovered I'm not the only one this has happened to, and some of the people seeking help were from five years ago; why hasn't this issued been fixed?  Some of the movies that were purchased are; Beauty and the Beast, A History of Violence, The Big Easy, Song of Music, Carousel, Oklahoma, State Fair, The Minions, Seven Brides for Seven Brothers.