Strike 1 - Moved the appointment
Strike 2 - Didn't bother to make the list he promised to make you a week ago
Strike 3 - Didn't tell anyone else you would be coming by

This guy struck out before you even had a chance to weigh the fact that he only calls you to fix things he got somewhere else.

Are you trying to be a "fix everyone elses crap" shop or are you trying to be the shop that isnt bogged down by penny service calls so that you have enough time to pursue the dollar installs?