waiting

so im sitting here at my office waiting on all my apointments to show up. Tommy called all of my brides the other day and set up like 20 apointments this week. He failed to realize he was double and triple booking me but ill forgive him because so far I have had three no shows. This really pisses me off. I have like fifty things i need to be doing around town and I cant leave because my apointments are supposed to be here. When a business says open by apointment only and then you set up an apointment less than a week in advance why the heck can you not show up or at least call and say im sorry im not going to make it or im running late or im a Dumba@*! So here i sit trying very calmly to wait on customers that have had there stuff here forever and have failed to show up once again. do you show up for your doctors apointments or your work apointments? What is so hard about this concept?