Detailed Instructions: Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.
Q: I read the reviews, which said that this was a great product. Bought one. After several weeks, it stopped working and I lost my data. I called them. I had to ship it back first then they sent a replacement. I paid the return-shipping fee. After one week the replacement did not work either. I lost more data. They refuse to do anything about it. Letters have gone unanswered -- telephone calls are answered by people who say they have no authority to make decisions. I complained to the Ziff-Davis computer magazine, which recommended it. No answer from them either. It does not pay to sue these folks. Buy at your own risk. Caveat emptor!
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Negative Review