Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective fuel pump. Amazon completely refunded my money!!

I had a problem with the first pump sent it back and the second did the same thing. I contacted Sierra and they said there was a manufacturing problem with this pump and to return and get buy one from a dealer. Sierra was very responsive and apologized for any problems we had.Amazon refunded all of my money including shipping. Amazon is a wonderful company to deal with!!!!!