Typical salespeople after a quick buck - sold to someone else after promising me a vehicle

Totally ********* and typical used car salesmen. I'd been looking at a vehicle there for 2 weeks, had been speaking to a salesman- Davey - had sent my documents through and was awaiting bank approval (which was given) , was busy booking flights to Pretoria and booking mechanics to view the car, have arranged a buyer for my old car, and SPECIFICALLY said if anyone else showed any interest I would happily pay the holding deposit. They then went ahead and sold it anyways without anyone telling me, and the only way I found out was after calling them and being told it it had been sold to someone else. Really disappointing and time wasters who only care about making a quick sale and not looking after customers