One thing that pisses me off more than anything is when someone says they will do something and then does not do as they stated.
I understand if things come up, but calling and canceling is the one protocol everyone should fallow. Especially when you make the appointment and then have a need to break it. Especially if I call you the day before as to confirm and you avoid the call.
Its a phone call and you can at least text the person you Inconsiderate Snowflakes!
Then you think because I am pissed over your neglect, that I should kiss your azz and apologize like some mindless flight attendant that spilled coffee in your lap?