False advertising on Hyundai Website

I recently went on to Hyundais website as we are looking to buy a car, I browsed through the pre owned vehicles and came across a Hyundai Atos going for R74900 , in perfect condition. With my excitement I then shared screen shots to my family who has been looking out for me and it was then pointed out that it is the wrong vehicle being advertised? Also upon phoning the dealership they said that the car has been sold and it is the image of the entire wrong car?? This is unacceptable. For a while I was so excited thinking I have finally found a car I was literally on the verge of going to the dealership all for it to be false advertising? How does such an error happen? I want answers.