Good God... take a chill pill everybody. In the best case fantasy world, no provider would ever miss a date and no hobbyist would ever not show up. In the fantasy world each of these folks would call, email, or text when the arrangement could not be met.
This is not a fantasy world. This is real life. The hobbyist complained about a NS/NC and the provider apologized. If it had been the other way around, the provider would be in their rights to complain. It happens. Move on please.