Issues with Premier Freightliner

I avoid my Freightliner dealer if at all possible. The last time I used them, I called a day ahead and asked if they could change the four fuel filters the next day (I never drop it and leave it), the lady said yes. So I got there when they opened, helped them put the slide out to access the engine, showed them where to plug in their computer, waited all day in the waiting room and left at 4:45. Their rate, couple of years ago, was $150/hour, the bill was over $400 including a 10% charge for shop fees. I have since found a mom and pop who take appointments, do it in one hour for a third of that cost and encourage me to stay in the shop with the coach.