Free treatment is it for real?

I received a call from a beauty skin care center, offering free treatment for their special day. She told me that all you need to do is attend the day then you can select any treatment which suitable for your skin type.

Frankly speaking, I am not into their free treatment. I know they would be pushy asking you to sign up a package plus holding your IC at their counter.

I have been to their center, so no thanks!

She told me that it is limited and need to booking first to avoid disappointment. I tell her off that I will need to check my schedule if I have interest I will call them up. Instead she insists of calling me next week to ask for appointment date.

She didn't give me time to talk, she's talking like a bullet train on phone.