Wow you seemed to get yourself very stressed out before anything started. You don't need to make it so confrontational. Just say I want to see the ladies first before I pay. If they say no, then say Thank you and walk out the door. Guess what, you'll see the ladies. It really is that simple. If they bring out just one lady then say do you have another lady? If they say no then just say thank you and walk out the door. Guess what, if there is another lady, she will magically appear.
No one is trying to rip you off. Each lady needs to see so many customers a day or they will leave. So if the hot lady has had all the customers so far that day and the other lady has had none the manager will try to get the other lady some customers. They aren't trying to insult you or rip you off. Relax it isn't personal it is just business.