Koons Tysons Chevy GMC

Worst experience ever!! I purchased a car from them not even a month ago. It was nine o'clock at night and raining when the sale took place so I didn't think I should inspect the whole vehicle for myself used or not since it went through the pre owned koons inspection. The sales associate Mando was great and that is all the positive things I have to say about this place. The supervisor Robert M was great before the sale was final but that after he would not return my or my husbands phone calls. That is when Brad S got involved. But first let me tell you what was wrong with it: the headphones don't work, the rear av didn't work,one of the head phone jacks didn't work, the rear seat belt looked like it had been named through, and they put in conventional oil when it clearly states synthetic oil. Brad S told me his service experts don't work on these cars usually and they didn't know. Well hello?! That is what the instruction Manuel is for. Also he said the detail department must have over looked the seat belt being torn in half and just hid it in the corner and didn't tell anyone about it. But at the same time I am being lied to about the inspection it has been through. Or are they telling me this is a koons quality pre owned car. Well after enough nagging and explaining these items should have been fixed before the car was put on the lot Brad asked us to bring the car in and they would fix it. My husband called the next day to check on the car and the service department didn't even know where my car was. It took our own investigating to find out they took it somewhere else to be serviced. When my husband and I went to pick up the car Brad S told us that everything had been fixed but they wouldn't replace the head phones since it is a luxury item. I was very upset because when I buy a used car I expect everything to work and if they didn't want to replace the head phones then they should have not been offered in the car. I kept on about getting new head phones or I would write nasty reviews. Brad S then insulted me by saying he would buy me head phones from Walmart if I wouldn't write nasty reviews because if you mention anyone's name negatively in a review then they would get fired. Not even having the car back after a couple of days we noticed the power outlets where you charge your phone were not working. We asked the place they took the car to be serviced what happened and he said if could have happened while they were working on the car or they didn't work in the first place. It took two weeks to get a hold of Brad S and when I did he said the car wasn't his problem anymore and their cars are put through a koons inspection and I would have to take care of this myself. Brad also said I bought a used car not a new one and if I wanted everything to be working properly I should have bought a new car. If this is a koons experience it was horrible and I do not suggest anyone buy a car from them and be put through what I have been put through. Used car or not everything should work and it hasn't even been a month of owning it. Brad S has no communication skills and is horrible at making customers happy He even hung up on me today and is very argumentative. I called to complain about the service I was getting last week to the general manager Bryan M and he hasn't even called me back. Koons has ruined my car buying experience and I will NEVER go to another koons dealer again.