The dealer we used to use said "you'll be having the premium service?" in a very matter of fact, assumptive way by a young lady service advisor.
I asked what that was and basically it was a container of top up oil in a case! For £32!! I said the car doesn't use any oil, so no thanks. She then had a right grumpy face.
On the next desk, a bloke was agreeing to it. When the service advisor went away to get something he then had a right moan about it. I thought, what a great way to hack off your customers. Dealers don't care, they just want to get as much out of you as they can.