I ve purchased 3 cars from SMP, and I ve never had...

I ve purchased 3 cars from SMP, and I ve never had issues until recently.
I purchased a Lincoln from them, and their service department called me constantly for service even before I actually needed it. I decided to book with them and that was the worst idea I ve ever had. Most places will do an oil change and an inspection for $90, but SMP charged me $240.
Now I just can t get gas and groceries for the next 4 weeks because they like to gouge their customers, and when I contacted them nobody ever got back to me.
Also, not like I expected it, but everyone else I know who s purchased cars usually get at least 1 free oil change, and while I don t expect them to throw in free oil changes I do expect they don t charge me $240 for an oil change and an inspection.