****med for my money by a so called reputable company that sells vehicles

On the 21st of December 2018, I went to a webuycars dealership in silver lake,Pretoria, to purchase a Faw Siruis that I was interested in. There, I spoke to a sales agent named Christian Botma who had shown me the vehicle and taken me for a test drive. Afterwards, I had asked him if the car had any problems, mechanical or otherwise and he stated that the car was in perfect working condition. Everything had seemed good so I had gone through with the purchase. The following day I was meant to drive the car back to durban however half an hour after the purchase had gone through, the car broke down. I was left stranded with a so called perfectly working vehicle. After paying a significant price to tow the vehicle to a relatives place, I had called the dealership and told them what had happened and that Iwant to return the vehicle because I had lost trust in them.I mentioned how unprofessional and shoddy it was to sell someone a vehicle that had issues. I told them that I want a full refund as I was misinformed. The sales manager named Gert informed that someone will come and fetch it on the Saturday the 22nd and by Thursday I would have a full refund for the vehicle and the towing fees as well as the money for the full tank of petrol that I filled because their finance department would only be in then. Now, today being Thursday, I had called him to check whether my refund is being sorted and he keeps giving me excuses like that they are only having a look into it now and that he will let me know. After trying to call him again, after 5 failed attempts to contact him, he says that a mechanic is only looking at it now to determine what they should do and that hes following procedure. They are not treating this matter with any urgency at all as I am now left with no money and no vehicle.