You are not slaves because Slaves do not get paid and they are doing the work unwillingly.
On the other hand, you are doing the work on your own free will and are getting paid, so it's not slavery (unless it involves human trafficking, which is a different story).
Anyway, I was pointing out that the this entire thing is a business transaction. Escorts provide a service, and clients pay them in return. It's literally the same relationship you have with a barber, a gardener, or a cellphone company. If you're unhappy with the provided service, take your business to a different provider