Instruct: Classify Amazon reviews into positive or negative sentiment
Query: does not work!

This celestron recieved did not work properly. Diagnostics says it is a problem with the gps part...but we cannor get ANY response from customer service, 2 weeks after first attempt.We contacted Amazon who immediately shipped a replacement skyscout and I returned the first one. It was the easiest most pain-free return in my life. Excellent customer service and the replacement works perfectly. REALLY cool product.