Mechanics, Morals and Manners

I am usually a very calm, rational, reasonable individual. In fact I can only think of two occasions where I have entirely lost my cool and went on "very nearly all-out" verbal assaults. Both of these incidents involved taking cars to mechanics.
The first one occurred years ago with my Mitsubishi Eclipse. I dropped it off at COURTESY Mitsubishi for a TUNE-UP. Kurt took me to pick the car up upon "completion". I had just flown in from San Francisco and was dressed appropriately for San Francisco in a longsleeve black turtleneck and black pants. I was told to wait "out front" for them to bring out my car. "Out front" translated to outside in the full sun and heat of a Las Vegas summer. After 20 minutes it still hadn't come out. Turns out the car wouldn't start. No big deal I thought.... I will just go inside and wait for the mechanics to figure it out. I decided to purchase a cold diet Coke as I was a bit withered from waiting outside in my heat absorbing ensemble. I didn't have change so I went to the cashier and requested change for my dollar bill. The cashier didn't have change. No big deal I thought, "I just want a diet Coke." I said. "We have no change in the drawer." "Ok.... well, I would like someone to get me a diet Coke then." I said and wandered back to the sofa sure that as THE CUSTOMER I would be granted my tiny request. After waiting another 15 minutes I asked another person there for a diet Coke. After a couple of minutes I began hearing distant murmers of "Hey, your customer wants a diet Coke...." "She's not my customer." "Hey, is she your customer? She wants a diet Coke." "She's not MY customer."
I snapped. I stood up in the middle of the waiting area and yelled at the dim-witted clump of employees that were mushing around about my meager request about 20 feet away from me. "HEY! I JUST BROUGHT MY CAR IN HERE FOR A TUNE UP ... A $400 TUNE UP... AND NOW IT DOESN'T RUN! I DON'T KNOW WHAT I WOULD GET FOR $800, BUT I KNOW I AM SOMEBODY'S CUSTOMER AND SOMEBODY HAD BETTER GET ME A FUCKING DIET COKE!"
I don't even remember how or where it came from, but I got my diet Coke.