Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A piece of junk

My son received this product as gift. When I plugged it in, nothing happened (apparently the quality control team was on vacation the day that this one was built).I called "customer service" and was told that this model was not a good one and that I should buy a different model.I choose not to do business with a company with poor products and poorer "customer service."