which is why you ask stupid questions one of after the other.  

You are like the movie Ground Hog Day. Only difference is movies is funny and you are irritating as hell

I do!....

Sometimes life happens!

But that is fairly rare I have found.

One gal did and had an excellent excuse, she got in an auto accident on her way to see me.  Her cell phone got ruined in the accident, and she was laid up in the hospital for several days.  When she got home she got my number from her laptop and contacted me.  It was totally legit as she had a big bruise on her leg the next time I did see her.  That was about nine years ago and she is still a regular, so it pays to forgive and be open to what can occur to cause a NC/NS.

Another gal called me a few hours after we were supposed to meet and apologized, but when I told her I could still make it over to see her she hung up and I never heard from her again.  Probably just as well.

she is apologetic in her reply to my email asking what happened. Usually the provider will offer additonal time for the same donation as a means of compensating the hobbyist for his trouble.

One lady kept m waiting for 20 minutes after we scheduled then texted me to say it wasn't happening.  That's just rude.

If a Provider did that to me, especially on our First Session,  I'm Never calling again. No second chance with me. Even if she has Stellar Reviews, I'm not ever calling her for a second chance. A First Impression is important to me.

I've had an occasion where a well reviewed provider confirmed the night before and I was to contact for location in the morning for hotel information.  I wouldn't be writing this is she'd picked up in the morning.  I would have understood a cancelation but instead was left hanging & my opportunity wasted.  She's still around but on my personal DNS list.  Not even if it was free.  Because I can never reclaim the opportunity she wasted.  
I would react the same to any NCNS without an apology.  
I have had Favorite's who had life happen & so have I, but we communicated so it was not NCNS.