I had my Mini (with 17k miles in for a routine oil change). Driving home the oil idiot light went on. I watched it carefully that there was no leak and brought it in two days later. I asked for a refund of my $90 (!!) oil change. They said no. I said, well, you inadvertently did something and now your fixing it for free, how about some good will for my time (I drive 35 each way to the dealership. Still no, but this time the service manager said "I was lucky that they weren't charging me $600 for the repair". Huh? So it wasn't their fault, but they were giving me free service. In the end, they couldn't fix it, needed to keep it over the weekend, but they gave me a loaner.
Especially beware women, they think you just fell off the turnip truck. I doubt they'd try this on a man.