Instruct: Classify Amazon reviews into positive or negative sentiment
Query: BUYER BEWARE

LONGEVITY- glass top broken within 1 year, roaster dead in 1 1/2 yearsQUALITY CONTROL- Had to purchase an entirely new roaster. First one arrived smoking with no air moving. Weeks to get another one. This one also burns coffee beans.CUSTOMER SERVICE: Non-existent. Much of the time you get a circuit busy on the phone; if you get through at all, there are usually 40 calls ahead of you. Messages are not returned. Neither are faxes.Home roasted coffee beans are fantastic, but this machine and this company are horrendous. Check recent reviews to confirm my comments re customer service. DO NOT DEAL WITH HEARTHWARE!