Sheehy Hyundai of Waldorf

Over the past few months, I've had nothing but horrible experiences with the Service Department. My car sat in their service center for 2 months awaiting parts and repairs. I have the Platinum Hyundai Vehicle Service Contract that was purchased at Sheehy Hyundai. I had to email two managers to get some movement on my repairs. Needless to say, when I got my car back, the brake issue I brought it in for was not resolved. I ask if they did any quality control or even test drove the car before turning it over to me. Also, they must had left my driver's side window down the whole time the car sat outside because it was full of leaves and debris from the tree it sat under. I took pictures and documented every issue with the car then sent an email to the Service and Head Manager. The Service Manager responded so I took the car back to them to repair the issue. I was promised the issues I listed in my email would be fixed and they will do a full detail of my car. I dropped the car off on a Thursday morning. Every evening after work, I drove to the dealership and stood next to where my car was parked. The car was detailed that Thursday. The car sat in the same parking space, front wheels slightly turned to the right, rear passenger tire on the white stripe with all 4 doors unlocked for 10 days. I called the following Wednesday to inquire on the status of my car. They said the part just came in and I will have my car back by Friday or the latest the following Monday. So I kept driving by the dealership every day and noticed that my car never moved from that same parking spot... Doors still unlocked. I got a call that my car was ready. I asked if anyone test drove it to ensure everything was fixed. I was told they weren't sure. I go to pickup my car. I would say that 9 times out of 10, the repaired cars are left in the back/side of the service department. A different service advisor went in that direction to get my car. When he could not find it, he then looked in their overflow lot. Guess what, my car was still in the same parking spot they left it in when I first dropped it off. SO WHEN DID MY CAR GET REPAIRED??? I still have the same spongy brake issue I originally brought it in for at the end of February. As a customer, what would you do?