Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Junk

Spent $500 on this piece of crap. First comb lasted 6 months then died. Customer service insisted they try sending me a new charging cradle and power cord. That ate up two weeks of lost treatments. They finally had me send the comb back and I got a new one shortly thereafter. Total of about 3 weeks of lost treatment. The second (replacement) comb has now died within a month. Customer service, while polite, seems to now be implying that this is somehow my fault. Here we go again. I have handled this comb VERY carefully and they just keep breaking. Junk.