I sold something on a website and got the payment, the listing shows that it's no longer available. Today out of the blue I get a money order from a random person for it. This other person never even contacted me about the item so I don't know how they got my address and the money order isn't filled out correctly. It just has my first initial and last name and not my address so I probably can't cash or deposit it. The only thing I can think of is they know it sold, sent the incorrectly filled out money that I may not be able to cash in the hopes I'll mail them a money order or check for a refund and get free money.