Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst garbage disposal I Have ever had

I bought the Insinkerator Evolution based on reviews and recommendations. It is very quiet but it throws the garbage up on the stopper and constantly has to be clean. It takes a long time to grind most things and never does it completely. I am very disappointed in this product. I heard it was a new concept in grinding and I have had Insinkerator before so I thought it would be very good. It is not at all and I am very disappointed. I called their customer service and she said that that was the way it was designed and not much can be done except buy a new one. Not a good answer.