Poor communication resulting in Bad service.

I purchased a Panel Van from the branch in Springs and I had the Van less than 1 week before it broke down and it had to be towed the next morning to the mechanics where the drivers were more than an hour and a half late to pick up my Van. They have had my Panel Van for more than a week and when I finally got my Van back the tank was halfway less than it was when my Van was taken to the mechanics. And the Salesperson's (also Deputy Manager) reason for this is that they lent me a Van (as an apology for the fact that the Panel Van they sold to me had mechanical issues) which according to him was half way filled up with diesel, but in fact was only quarter as I proved to him by taking pictures of the Van's fuel gauge and sending it to him when they dropped it off, when I was promised by the Manager that it would be completely full. The workers lack a great amount of communication as I was led to believe a couple of times that I would receive my Van earlier on and each time I waited for more than an hour and a half where I was not kept informed that my Van had to go back to the mechanics. The Salesperson(who is also the Deputy Manager at the Springs Branch) who sold the Van to me ignores my messages and does nothing about the problem at hand. If I do not phone the company's head office and ask for information then I don't get the information I need.