If it were me I would not refund especially if it was stated clearly before they purchased it. It's people like that who need to learn how to read before buying items. Some people also think they can always have their way and I can't stand people like that - not saying he is one of them.
Did he state why he wanted the refund? Did you sell an ebook? How often are you asked for a refund on that specific product?
Did he state why he wanted the refund? Did you sell an ebook? How often are you asked for a refund on that specific product?