Nope, I never dealt with their service department, aside from when they were "trying to buy" my 2015 Mustang GT. At the time, it was not for sale. It was a 1,000whp car and I had driven it up there to inspect a holdover new 2013 SRT8 on their lot (this event occurred in 2016). They wanted to give me an offer for the Mustang, just to see if I liked it. Some kid (16-18?) asked me for the keys so they could drive it around back to inspect it. I told them to jump in a lake and he could pop the hood and let it idle if he wanted, but I'm not getting the car inspected out of my eyesight. Their service manager came over with the used car sales manager and they pointed at things and talked between themselves before offering me something like $35,000... maybe more if it came back with a clean inspection. Needless to say, the car was only a year old and MSRP'd for 49k and had about 40k in work added at that point. So, yeah... no deal there. One of them made comment that they didn't believe it was a 1,000hp car. I asked him then what engine he thought was in the car. "Oh it's just a 5.0, that's what it says on the side." Sure, it was a 5.0, but it was an engine swapped 5.0 to a race built 5.0 Aluminator with custom JPC racing heads and the whole nine yards. I replied, "So, what does a 1,000hp motor look like?" I then pointed to the other badge on the car (my shop's logo). I reminded them that I owned and managed that shop, and that maybe they should look a little closer.
That's really the only experience I have with their service department.