1, send him the washing label.

2. Say that the next order will be compensated appropriately, such as giving him a price discount.

3. The key depends on whether this customer is a big customer or a small customer. Of course, big customers attach different degrees of importance.

If small customers make such excessive demands, they should handle them according to the above method of 1 2. If he really doesn't want to buy from you in the future, forget it. After all, buyers and sellers have to understand each other.