Vechile not good condition.

On the 20th of September 2015 I purchased a Land Rover Discovery 3 form Shelly Beach in Durban (Dealers / Sales person name being Gustaf). I drove back to Mpumalanga (Nelspruit) on the 20th of September with no problems but on the 28th of September 2015 to my surprise as I came back from our local town the car started giving me problems with the gear lever which was now locked and on several attempts of trying it had no luck! Frustrated I gave Gustaf from Shelly Beach a call and told him of the problem but to my surprise he said that I was the one who caused the problem, I then opted to ask Land Rover from Nelspruit for assistance and the checked the car only to find that when they diagnosed the car (IT WAS SAID TO BE A FACTORY ELECTRONIC PROBLEM), B&J was the person who assisted me on that day Cell no: *** Landline : ***. I was then advised by this individual to take the car back as it was not in good condition. I paid R500.00 on that day to be assisted this side as Shelly Beach Dealers refused to assist me. I am still paying for the car but am not driving it with no help from Shelly Beach. Please assist me.