As shitty as it is, this is done by Providers and Hobbiests. Providers have and do choose to back out of a session if they do not feel comfortable with a guy.Some girls will watch thru a window and if they see the guy pull up and for whatever reason change their mind, will not answer his texts or calls.
A Hobbiest has the same right to back out or change his mind too.
There are providers who in their ads will state that they have the right to cancel at anytime, even when the guy arrives, is standing in the doorway, a gal will sometimes change her mind. This is also the right of the Hobbiest. If the door opens and it seems is not the same girl, possible bait & switch, or something doesn't seem right, he has the right to say Bye.
It is a waste of time for both parties. A guy will drive across town using fuel to be ncns or a girl changes her mind just as a girl uses time to get ready only to have the guy back out when he arrives. It is a no win situation for both parties.
I had an appt with a girl back in 2011. I had seen her once before and had a great time but this time her normal incall was not available because she said her car broke down and offered for me to come to her house. When she gave me the location my spidey sense went off. I know the area and it's not a good area. I arrived early, sat across the street in a store parking lot. After 5 minutes her car pulls up in the driveway. She gets out of the driver side and 3 gang banger hood rats in full ghetto gear get out of the car and follow her inside.
She texted me and told me to let her know when I was close. I waited a few minutes to see if the HR Crew were going to leave. They did not. So I left and texted her that I had to cancel.
Kind of makes one feel a new low in their life when a Hooker or John rejects you. But, Hookers and Johns are a dime a dozen in DFW area.