Bad experience. Called and booked appointment for ...

Bad experience. Called and booked appointment for oil change. Person who scheduled me told me service would take 1 hour 20 mins including complimentary wash. Arrived for appointment. Service Rep said it would take 2 hours and 20 mins. When I questioned difference I was told that the person who booked my appointment doesn't know the service schedule and shouldn't have quoted how long it would take. The scheduling person doesnt know the schedule? Lame.