Audi being unfair

I went in to Audi durban, to purchase a car. I found a car that was marked for sale at R259000. I enquired and asked the sales agent to take it for a test drive. I drove the car and was happy. When we got back to the dealership, the sales man tells me the car is sold to 1 of the staff. I asked to see the manager, to question him, but was brushed off. Pathetic service. My purchase may not make a dent in the sales of Audi, but I will let my story be heard.