No no for poor service from Toyota

I bought a Toyota Cross 1.8 XR. Currently on 13800km. Since purchase I experienced problems. Recently there was a rattle around 2000 refs. I took it in to East Rand Toyota more than a week ago. Toyota East Rand tried to find the fault with no success. Then in Monday this week it was sent apparently to a master technician who would attent to it. No feedback. I phoned the branch but could not find any person available to give me feedback. I sent a mail to the head office. No response. I phoned head office to speak to the manager: not available. I was referred to Lungi who apparently is the person to whom my vehicle is allocated. Guess what; not available. So far I did not get any feedback on the progress with my vehicle. I have no groceries or medicine anymore. I tried to walk to checkers yesterday and fell on the pavement. I do not know how to proceed other than to sell this vehicle at a loss