You could try walking out.
First time I wanted to go with 2 girls to see if it was worth it, first girl comes in, pushing 30 (probably past) but passable. I kept asking about the other girl. "She'll be right in." I wouldn't hand over any money though, not for one, and certainly not for two. And she's trying to get me undressed. I took my shoes off and my shirt, pants (I think) were still on.
Finally, she gets the hint that I'm not paying until the second girl walks through the door. She leaves, comes back a minute later. Then a gray-haired woman in her 50s at least pokes her head in and says "Hello!"
I just looked at her and I said, "NO."
They both left the room. I jumped into my shoes, shirt and jacket, and followed them. Near the front door were two women in their early 20s who'd just arrived (It was probably around midnight if I remember correctly, definitely evening.) The didn't give me even a second glance, and they likely didn't know what was going on.
Broken English: "Look! Young girls!"
Me: "You already wasted a half hour and I need to be home. Another time." and I walked out.