I went to a 7-Eleven to buy something to eat, and I wanted to get a gold stamp to win a premium Doraemon product.I tried to find something to buy.So that I could get the gold stamp I misunderstood the conditions. When I read them. And I couldn't get the gold stamp. When I tried to buy something. I would like 7-Eleven to make the rules a bit clearer. They should let the customers go home dissatisfied. If 7-Eleven has more satisfied customers. They will get more sales