Instruct: Classify the given review into positive or negative sentiment.
Query: Worthless

I couldn't select zero stars, but given my experience with Amazon and the Horizon product, I would have. The product is currently worthless because it is sitting in my garage in an unusable state. It arrived damaged with a broken housing and handle bars, and was missing washers needed to complete assembly. I have contacted both Amazon and Horizon customer service to no avail. Amazon did respond (Horizon hasn't), but has done nothing to resolve these matters.2/15/06 Update - After more than a month, I finally received the replacement and missing parts to complete assembly, but the machine makes the most annoying clunking and grinding noises from within. (Nothing to do with assembly.) Horizon has done nothing to evaluate or repair the cause.Grades for Horizon and Amazon: still a big fat "F"!!