Instruct: Classify Amazon reviews into positive or negative sentiment
Query: CoolIt Eliminator

Good product while it worked. The pump died within six months. I contacted the manufacturer CoolIt. I received a call back a week later. The Eliminator was discontinued. They offered an upgraded to a better bigger unit for $65.00. I agreed to upgrade and sen the one back via RMA. The new unit was nit shipped and I did not receive the RMA. I called three weeks ago and have not hear or received a call back. So far, I am no happy.