How to send a message to a beauty salon customer asking for arrears?

First of all, be polite. You can't ask him to take it for granted Then let him know what will happen if he doesn't pay back the money. Don't spray when you come up!

"Hello, Mr. XX, I am the boss of XXX. What do you think of the beauty you did here before? We also have a care mask here, which is actually not very important. The important thing is late care. Be sure to have a care every x days (the customer can't help it). After coming, do half of the care and talk about money. Turn on the recording before, or call the police!