We had a phonecall from some 'vacation' place saying we'd won a trip via a purchase we'd made somewhere (they were unable to say when, where or for how much) and that all we had to do was verify our bank details to confirm our identity - they wanted me to read them out to them. I refused, told them that if they had them they could read them to me, the supervisor who eventually came on the phone to argue about how safe it was to give them my bank details was just fighting with me for the sake of it at the end. I hung up on them and checked them out on Google to find loads of people had had hundreds taken from their bank accounts by this company, when they had never agreed to anything. They had literally no way of getting their money back and in some cases they had to change banks altogether to get away from them. This is why I never give my bank details to anyone I don't know or trust (I never would have before either though!). Someone buying from me on Ebay would not fall into this category!