In my shop I display pins on pillow like the attached picture. Yesterday this regular customer, who is admittedly bipolar and a few other things, comes in to visit. He admits he has been in the psych ward for the past 3 weeks. This guy has had a fascination with the pillows of pins for a long time. He has told me for months he was going to buy a pillow with all the pins and give them away. So yesterday he says I'm ready to buy the pillow. OK. This particular pillow had a little over $300 in pins on it. He paid cash for the pillow then refused to take it with him. He insisted that I keep the pillow and give a pin to each customer who makes a purchase. What to do??? I know this guy well enough to know that by the end of the month he'll be broke and want his money back.