Instruct: Classify Amazon reviews into positive or negative sentiment
Query: hate to be a party-pooper, but....

I was so excited to get my dirt devil delivered so that I could use it to clean my area rug under my dining room table. The main reason I ordered it was because of the mutitudinous positive reviews from other amazon customers. Well, I assembled it easily enough and got going on the carpet....it was such a let-down. It was not very effective, I had to go over and over the same spots which were light/not major stains. In the end I unassembled it, put it all back in its box and had it returned. I must say, amazon was great about the return...picked it up at my door and gave a full refund quickly.