The number of questions, calls, texts beforehand are inversely proportional to the likelihood of them ever booking.
I answer the first few, but when he hits me back with another slew of questions (is my right testicle larger than my left...) or tries to initiate phone sex, I tell him I'll need a small deposit to keep this conversation going. Most often that ends the conversation, but he was never going to book in the first place. Inevitably, the jacker off moves to the next guy down on rentmen and starts the process all over again and has never actually paid an escort in his life. I could spend untold hours jacking these guys off over the phone and perhaps get one single booking out of it, but that's not a productive use of my time.
Kevin Slater