I have heard stories about Scanlon as well. Granted, the service manager's reaction was out of line, but just from reading your story, it seems that you may have pulled into the service department with a chip on your shoulder. I have done business with this dealership many times. I have not always made my purchase their, but have been treated as well or better then most of the other dealerships. They did not get the size they are by treating the public poorly. In regards to the statement that you might have been treated this way becouse you did not buy the extra's they tried to sell you, that is just another way for you to point blame and is a rediculous comment. They are suppose to offer additional services and justify the reason for them. Firestone, Goodyear, Quicky Lube and every other automotive garage does the same thing. I have no problem with that as long as the offers are to better my situation and are presented to be professionaly. They are their to make money and SELL products and services. You have the wright to decline as well as the wright to purchase.
I think it is a bit harsh to go on the internet with the intent to stop a company trying to survive during these tough economic times from doing additional business, and trying to keep the public from going their by smearing there reputation based on your bad experiance.. How about trying a sit down adult meeting with the manager and share your concerns behind closed doors? Just a thought. My guess is you will leave with more then you showed up with and feel a little better. Everyone has a bad day now and then, even the service people at Scanlon that you wish were still around.