There are some customers that you learn early because they are notorious. Thieves, chiselers, princesses, name-droppers: whatever their game, they do it with gusto and without remorse. "I am such a great customer! I've spent so much money here!" They might tell you that to get what they want and to intimidate. I hate that it works on people. Co-workers might mention that a certain customer owns half the town and has more money than God and everything we have we owe to them because of their wild spending habits.
Since they are an unavoidable force in the retail world and it is pretty impossible to punish them, I have decided that the only real way to win is to give my very best service to the customers that deserve it. Oh, I will still smile and inquire and wrap with care for the baddies, but I will be doing it as quick as possible to get them out the door and onto pestering others. When possible, I am going to tell my good customers how much I appreciate them. Because I really do.