Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Resistance Band broke

My resistance band broke after 6 months. I called the manufacturer to askek for a replacement and this is what the told me:"We offer a 30 day guarantee for our customers who purchase their DVD's from us. We have no way of knowing if the DVD you have is a knock off. Please understand that we cannot verify whether the DVD you have is made by our manufacture. The resistance band is not an item that we sell separate, it is included in the DVD case. If you had purchased the DVD from us, we would have sent you an entirely new DVD."Amazon offered me exceptional customer service, but I am absolutely dissappointed that the Shape Boutique would not stand behind their products. For that they get only one star.