How do you say the gym customer service pays a return visit?

Just say it. You can say, "Hello, Mr. (Ms.) xx, I see that you have registered and you have been to our gym. Hello, what have you thought about? " Then you can talk to him to see if she really needs fitness, and then introduce the hardware facilities of the gym, how excellent the personal fitness instructor is, and how affordable the price is now. I hope I can help you.