Yes, it's easy to get upset with incompetence and laziness. I don't want to take this thread into a "why dealers suck" direction, but I have a relevant experience that speaks to your issues. I owned a Jeep with heated seats that didn't work; still under factory 3/36 warranty. Took it to the Jeep dealer. They diagnosed the problem, said it needed a sensor. Had to order the sensor and reschedule the service visit (and get someone to chauffer me). They called to say the Jeep was ready. Went to pick it up, and on the way home tried my heated seats. Guess what? They didn't work! Took it BACK to the dealership, where they re-tested and found something ELSE wrong. Had to order ANOTHER part, requiring ANOTHER service visit (and another chauffer). Long story short, this happened 3 MORE TIMES. Only when there was a recall (a year later) did the problem get resolved. If just one technician would have sat his (or her) big butt in the seat and TURNED ON THE SWITCH to see if the seats worked, it could have saved everyone a lot of time, aggravation and $$. As you said, you have to ask "what were they looking at?!". If you've provided them with a typed list, why would they choose NOT to read it?

You are not dealing with a discount store, you're dealing with a BMW. Somewhere along the line, you'd hope someone would realize there's a difference. Where I work, I like to preach 2 things; 1. always take the high road, and 2. take ownership of a situation and see it through to completion. This isn't rocket science; it's just doing the right thing!

<END OF RANT>