Instruct: Classify Amazon reviews into positive or negative sentiment
Query: disappointed

The treadmill is on an uphill angle. It is very easy to fall off. The screw head to the exercise computer broke off, and the remainder of the screw is stuck inside the screw hole. There is no phone number for the manufacturer on the treadmill or in the owners manual. Apparently it was on the box which we had already discarded before we realized we needed it. I would not recommend this product and would like to get rid of mine.