Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do Not Buy These Videos!

I thought the intro package was great, but it went downhill from there. The intro package has a long and short workout. The rest of the videos have only the long workout. In total I have 5 of these videos. They do mix it up with some dance moves, but many, many of the the moves are march-in-place- repetitive. DanceSport LLC customer service is TERRIBLE! It took them 3 tries to get my address corrected. I sent back a duplicate product but they never did give me credit for it. Kept me on hold for up to 30 minutes at a time too when I had to call; and I had to call at least 8 times! BUY USED only!