Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I was ripped off

I had been looking all over the place for this vacuum cleaner, and finally found it on Amazon. I was thrilled, ordered it, and received it. When I opened the box, several things told me that I was not the first person to receive this broken vacuum cleaner. I am very disappointed in Amazon and will never purchase anything but books through them again. It will be a long time before I order a book from them either. I'm pretty angry.