I test my items out twice. Once before I put it up for auction and one more time before I ship. I know for a fact the item was working 100%. It was packaged well and I can't see it getting damaged in the shipping process. The buyer left me positive feedback and then a day or two later emailed me and said the item did not work. Which I find odd. Also the buyer had zero feedback until recently and just got about 3 with 1 negative already. I usually would not question someone and would take a return but like I said I am 100% sure it worked and the buyer left me feedback so it just seems like they do not want the item. They also paid by Money Order. Should I take it back? If I do refuse to is there anything that they can do?