Instruct: Classify Amazon reviews into positive or negative sentiment
Query: clamp jammed

Always favored Bessey clamps over all the others I have, but one that I used maybe twice jamed so that it will not move up and down the bar. I called the 800 number and was told in essance that I had to send the clamp back to the factory for evaluation and if they found that it was not defective it would be returned. Being that the clamp was less than 6 months old I asked if they could send me a new one and I would return the defective one to them. They said 'no'. Just seems like poor customer service to me.