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

We purchased our Sunbeam Heritage mixmaster to replace one my wife had received from her grandmother which after decades finally died. The new one lasted less than two years. We thought at first it was just the beaters so we ordered new ones (for about half the cost of a new mixer on sale...) and when they arrived we thought all was good. Not. The problem is inside the housing and I'm guessing it's a plastic gear that has broken or been stripped. Very disappointed.