Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not what I expected

We received two of these for a wedding gift. My main use for a can opener is opening large dog food cans for my three dogs.A can opener doesn't do you much good when it won't open the cans you primarily use. So, when it wouldn't open a can I unpacked the other can opener we were going to take back. It wouldn't work either- so we took both back and bought the B and D gizmo instead- it works great.