TR, we all have different stuff that bugs us. Not sure why this one bugs you, but I see that it does, but that person was willing to pay for the appointment, so it doesn't seem fair to point a finger there.

It would annoy me to no end if the T tried to have a set in stone appointment that I could never change without paying. My T has had to change or cancel appointments with me because of issues with meetings he has to go to, or continuing ed classes or trips or whatever. I do not fuss about it. I expect the same courtesy from him.