Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Product simply doesn't work

I'm a well-educated professional and I've been able to successfully operate every other software product I've ever purchased. This software, however, gives me various error messages each time I try to make a back-up copy of my harddrive. Sometimes the error is "can't copy read-only file" and sometimes the software just runs and runs and never actually does anything (I let it run for 2 days once, and it never got past "0% complete"). Most frustrating, however, is the complete lack of support from Acronis. I've contacted them 3 times, each with a detailed but simple statement of the problem, and as yet have had no response. There could be a simple explanation for my difficulty, but if there is, I'm certainly not going to find out from them, and the skimpy supporting documentation provided with the software certainly doesn't help. If I were looking for software in this genre, I'd steer clear of Acronis.