Interesting - I received the same letter in the mail and was wondering if it was legitimate. Frankly, I checked my PP account, and have yet to call my credit card company, When I called that toll free number, they wanted more info, and I felt uncomfortable giving it. We have a Fabric Depot that I DO shop at, but they take cash and checks ONLY - other than that, I don't remember any other purchases on-line....big mystery, isn't it?