Mercedes-Benz of Buffalo

I would steer clear of this dealership. I made a deal on a vehicle, took a picture of the signed contract with VIN number and received a different vehicle upon delivery. After realizing that it was a different vehicle (a little more mileage than what I remembered and also looked like someone ate fast food and left some stuff behind) I called the dealership only to be told this was indeed the car I purchased. I then told them it was not as it's a different vin number and I had taken a pic of the vin and contract. They agreed to give me the car I made the deal on and asked that I keep it quiet as they could not sell a vehicle as new once it had been registered. They had the registration removed and registered the car I initially purchased (the correct one). I told them I wouldn't say anything but that changed now when I can't get any service response and my original sales rep could not put together a new deal for me as my lease is up next month. I have not been contacted about how to return my lease and my voicemail has not been returned. I was under the impression that Mercedes Benz was a luxury car Company, however, I feel that Mercedes Benz of Buffalo is not able to relay that with the service they provide.