Grand Prairie Ford

I purchased a car from this dealership last Friday and I have issues. A sensor is going off on the dashboard saying Unavailable Front Radar Obstruction and I asked the salesman what did that mean and he told me that it had something to dealing with low gas in the vehicle which that was a lie. Next on the Carfax it started that it has Navigational system that's not true because when I get to the screen it's blocked out. Every time I turn on the vehicle I would have to reset the clock on the dashboard and my radio stations because they never stay set. So I took my car back this past Wednesday because they said that they would fix the problem and they didn't do anything but tell me to take it to the Nissan dealership and get it fixed out of my pocket. This is totally unacceptable Every time I tried calling someone I get a voice mail even down to the General Manager no one seems to answer my calls.