The milk has gone bad. I worked in a supermarket and found a loophole. Those overdue 1 to 3 days will not be returned to the manufacturer, and then the supermarket will put a new date label to say that they are new arrivals. Some of them are black holes. Answer: Of course, if you want to go to the supermarket with the receipt you bought that day, you will usually solve it by shirking at first, but it is best to let the supermarket manager come forward to solve it. There is no problem with the product manufacturer. The mistake is that the supermarket did not return the futures to the manufacturer in time and then replaced them with new ones.