None in 7 months, about 40 sessions.

In approx. 20 dates I've never cancelled and I have had two cancellations.  One was for 1/2 of a double that really bummed me out.  The circumstances were very understandable.  The other cancellation I believe was because I've never been with her before and shortly after she posted on her websight that she wasn't taking new clients.  The important thing is both gave me advanced notice.

Re:Question for hobbyists ?

5 times in 4 years but 4 in the last year. Twice the same gal. However I forgive her and understand the situation. Plus makeup sex is the best! When there's a cancellation on the first appointment without sufficient notice it's basically a write off for me. I do understand that things can come up. I've had to cancel myself so I try to be understanding.

You are trying to make something out of a bunch of nothing.If a provider cancelled or is a no call/no show for an appointment don't reschedule see her! There are more than enough ladies in this area who are wet,willing, and waiting.

One no show in 14 years.

About six years ago I had two, one left a note, the other an email both understandable emergencies and I returned to visit one many times one only once.

Last year after driving in a torrential rain storm for an hour in ungodly traffic, she didn't show and didn't answer her phone. I waited half hour and drove back only to get a call after I was just about home with an apology and a great deal if I returned then or later. I haven't been back.

I've never missed an appointment and I expect the same. This is a two way street.

In eight months, I've had two ladies who had problems with appointments.  With the first lady, she got caught in DC Beltway traffic and couldn't get to her email to retrieve my number; we made contact later, she apologized, and we had a very very nice session a few days later.  I had one other lady flake out on an appointment, and when I called to let her know I was pulling into the parking lot, she was obviously just waking up and amazingly hung over.  We cancelled, and I never contacted her again.

I recently had a problem where I locked my keys in my car and called to tell her I was running late.  The lady's schedule for the day was too tight to let me slide back, so we went to another day.

I've had any number of ladies who were spotty about returning phone calls or emails, but that's an entirely different thing.

in the past year I've stepped up my hobbying, so I think I'm raising my chances of a no show too. In the past year I've had 3 no shows/ cancels.
One girl cancelled on the 2nd call to get her address and room number. That pissed me off after making the trek into DC from the burbs. Didn't go back.
2nd girl didn't answer phone for the 2nd call. Agency wouldn't answer the phone either. I waited 45 minutes in the parking lot before left. I got a call 2 hours later explaing that she had an   emergency and was sorry. She sounded really out of it, so I crossed her off my list. The agency, I'll never use again, they never called back at all.
3rd girl was a sort of miscommunication. She likes to text to your phone and I kept calling her. Jeez if you can sit there and type shit out on your phone's keypad, just pick it up! It was frustrating, but kinda my fault too. She was very nice about it and she's still on mt list and first in line too!

I've had 2 over the last 3 years or so.  I usually do incalls which helps reduce the chances of this.