My vehicle broke down on July 4th 2017 and the Bui...

My vehicle broke down on July 4th 2017 and the Buick dealer was open which was great for me as I was traveling for an out of state vacation. My vehicle needed an alternator and upon inspection the dealership recommended I get an oil change, transmission flush, and cleaning of the throttle body housing. I did all in the tune of over $1100. The oil change wasn't done correctly at all. Two days following the oil change I added two quarts of oil and had my vehicle. Andrew from Gainesville Buick GMC recommended I have the vehicle checked at the Cadillac dealer in my hometown. I did, on July 12th 2017 and no oil leaks were found and the pressure test found no oil leaks. I also noticed the oil change sticker in the windshield wasn't changed by Gainesville Buick GMC which normally is updated with information of next oil change and mileage. My service advisor "Andrew" who was a nice gentleman in person, now will not return my calls.