Terrible service

My H1 bus has been giving problems for 2 months now. I took it in to silver Lakes branch 2 months ago, so on the 25/08 I took it into menlyn. They said the turbo is gone, still under warranty, and will take at least 3 weeks to order the parts. They can't give me a courtesy car cause they don't have. But I must contact silver Lakes because it's due to negligence that my car left their unfinished. So we contacted silver Lakes, they said they will phone the Manager, Stephan, at menlyn. He then denied ever saying that about silver Lakes. So I phoned the receptionist, Suenett, and she straight out told me that Stephan is lying and that she was told that by Stephan, so now who is lying??? I now have to hire a car, my own expense and they couldn't give a dam. I am seriously disappointed in Hyundai. Will never buy another car from them again and can't wait to sell mine.