Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: ok product - terrible customer service

Great machine. I've used it for extra storage for a long time. It's put up with a great deal different kinds of ubuse such as heat, slight impact, dust and smoke. After about 3 years of loyal service, it seemed to die. I did have to call customer service for a week before they responded but they pointed me in the right direction and saved the day! The next one that I buy will be a QPS.