Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst Customer Service

When it works, it is a joy. About once a week it jams. I have had 2 boxes in 1 year and gave up on getting a new one. Customer service promised to send one and they didn't. Try getting them on the phone and you will wait an hour. Or they will call you back in 5 hours (usually while you walk the dog) So I went and purchased another and burned the old one. (took the advise from another helpful rater below)