White collar *******

In January we were buying a car from Carter Nissan Magnite. Before the car could arrive we had to get a car insurance then Lubabalo from Barloworld contacted my wife with the best offer from budget but they needed us to pay R1500 in advance my wife paid it and send them proof of payment. The agreed that they received it. After we couldn't get the Magnite then decided to walk away from Carter because they couldn't get us the car. We demanded our cash back we told Lobabalo he contacted them but they didn't pay it back, now is May still waiting. And it must come with interest. Because I was to let them in our new deal after we bought another car from we buy cars and told them they must first pay our previous cash before they disappear.