Sales person Stefan give him award for lies and rude to customers. Lying about the condition of the car

I must say the sales guy at Jbg South brunch is the worst. Stefan Myburgh waa our sales person. Customer service i rate him ZERO, HE'S BEEY RUDE. Bought a vehicle on auction a Nissan nv350. The description said the vehicle is petrol, when we went to collect the vehicle it had a diesel engine. We refused to take the vehicle like that. The sales person kept on insisting that the car was originally diesel until we called Nissan to confirm. The vehicle was a petrol but was modified to diesel. To make matters work the vehicle didn't want to drive. We told him to cancel the sales and refund the money. No Stefan told us he's busy he's not going to do it. I recorded him all the calls I had with him. The money was supposed to take just 5days to be refunded but Stefan was busy to process a refund that doesn't even take 10min to do. Now sitting on day 10 with no refund.