I ordered a mathematical book and they charged $227.45 on my credit card. After 6 weeks, they canceled my order since they were unable to locate the book. However, they refused to refund. Instead, they say they posted ``Store Credit'' to my account which can be used only in their store. This is totally a fraud! They list fictitious items (i.e., items which do not exist) on their web page, and take an order and charge, then cancel the order without refund. If one orders again, then the same thing happens. So there is no way to use ``Store Credit'' because the products do not exist from the beginning. They take money without selling anyting. They are stealing money. This is completely a crime!