How about just not giving your number out? That one works for me.
Exactly. With a dancer, there's no reason she needs your number. It's not like with an SP where there needs to be a way for her to contact you as part of the booking process. That's why, when we deal with an SP and give her our number, we strongly expect her not to use it without our consent.
Dancers are different. The only reason the dancer "needs" your number is so that she can contact you and invite you to come to her club for dances. If you give a dancer your number, you would be foolish not to expect her to use it in this way.