Issues on the car

I check car on a car gurus because I heard it’s a
better and trusted way to buy a car. So I selected
cars and contacts dealers after that I buy a car
from these place 3301 Shannon Park Dr
Fredericksburg, VA 22408. On Wednesday
10/02/2018 I asked if the car has any issues and
they answer my question by saying nothing and
clean. So I just went to inspect the car on Friday
10/05/2018 car has issues and it can not pass
inspection because of emissions and also the
engine lights on. I called them and try to talk but
They just talk to me ones after that I called many
times but I can’t get any answer from them. I’m
really upset about it I can’t understand why they
are not answer my phone.