Car cleaning

Yesterday, I took one of the cars in for detailing-the lowest level of detailing. I had made the appointment and admit that I had to change the appointment because something came up that needed my attention. However, I had booked the appointment. Once I arrived with the car was told that no the car could not definitely be ready at 2 p.m. which I had requested. The earliest they could promise was 5:30. This meant a serious change of plans, I was going to high school where I am helping and this would require a change. Not impossible but not as convenient. What I found annoying was that I had made the appointment, asked the questions and then was told that no I could not be accommodated. 5:30 was the firm time which meant that the dealership would have the car for over 9 nine hours. A bit excessive for a simple cleaning.
What I found disturbing was the attitude displayed. There was no acknowledgement that I had asked the questions and was not in the wrong. In fact, I was made to feel that I was in the wrong and why was I bothering them with these details about time lines.
Anyone else have problems?