auto connection Manassas va sold me a vehicle after saying nothing was wrong withit other than needing a tuneup Manassas Virginia

I went into auto connection to ourchase a used vehicle.  Found a vehicle I was interested in. I spoke to the mechanic who promised that tge car was in very good condition except that it needed a good tuneup and a side panel door. I purchased the vehicle as is. I drove off the lot. About 30 m les away from the dealer the vehicle started shaking uncontrollably. I immediately took the vehicle to a mechanic who told me a list of multiple things that was wrong with the car. I immediately call auto connection and spoke to the seller. He put me on hold and transferred me to someone else who said I couldn't do anything about it.I have not been able to drive the car.