Before I sold I my auto repair business in Los Angeles I ran it in a manner that could guaranty that the customer would get their car back by the end of the day unless there was a large up sell or they showed up with a longer list than was originally talked about. New customers would often ask why my large parking lot was so clean and empty and I would explain my scheduling philosophy to them. It was usually met with either a blank stare or a very confused look. I stuck to this scheduling philosophy because in LA everyone needs their car and it decreased the stress on me and my crew. This scheduling process cost me a lot of profit over the years because most people judge a repair facility not by the quality and promptness of the repairs but by how full the lot is at the facility. There were even competitors that would buy junkers, move them around the lot each day and they were very busy even though their end result was usually poor. I came to the conclusion that most vehicle owners are not happy unless they can complain to their co-workers about how bad their repair facility is, how they over charge, etc. We are damned if we do and damned if we don't. The moral to the story is if you don't like what you are hearing from your shop go elsewhere. We do not have time to worry about your feelings. We have vehicles to repair in a timely and cost effective manner and if you do not like my particular approach try my competitors. I wish you well.
Randy