It may've been their credit card, with no enough funds to cover the transaction. Some people will buy things, then find the same thing cheaper, so will ignore the first one they bought thinking it will just go away. I don't know why they do it, when they can just contact the seller and let them know what's going on. As a seller there is not much you can do apart from let the dispute run its course, then add the buyer to your blocked buyer list. If you try to fight it, you will get charged $15 for the privilege. There is another thread outlining what happened when I seller tried to fight it. As for wanted to be compensated for lost time, not going to happen. You just have to wait and then relist.