These people are ******** operating under an assumed business

I saw this Isuzu KB 250 on OLX marked as HOT ad. Made contact and the agent called back. I told him what I was looking at and he said the vehicle is still available. This morning they sent me the invoice as per my request. They agreed to deliver the vehicle same as my car was delivered from Pretoria. On delivery I would then do EFT and the deal would be done. Requested documentation sent back. And then all hell broke loose. I get calls from every single apparent employee demanding I make deposit of R10 000 so the bakkie can be sent. This includes the salesman I first spoke with. I then decide to rather take the 183 km drive to 105 Rivonia Road Sandton and collect the bakkie myself. I tell the salesman the Financial Officer and the owner I am on my way I will do the eft there in their office when I have signed and sealed the deal. They tell me it doesn`t work that way at which I tell them that that is how I do business. On passing Alberton I call to let them know I am almost there. The salesagent drops the call. The owner does not answer her line. I get through to the supposed Financial officer and he says I should have made the deposit as the bakkie was sold. Now This is a load of ****. I know the secondhand vehicle industry is struggling how can a Bakkie advertised yesterday afternoon be sold already? And that within 2 hours of me refusing to pay a deposit for a vehicle not in my possession?