Mahindra customer service is bad

I bought a Mahindra XUV 500. in 2014 with a five year guarantee. I took the vehicle in to Richards bay Mahindra for a repair. Initially I was told it will take about three days. After three days it changed to three weeks. Still the parts could not be found in South Africa. Now I have to wait maybe up to two months if I am lucky. I was told to call Jolene at Mahindra head office. I called and every time she was busy. Up till now nobody came back to me. All I want is for Mahindra to be reasonable and provide me with another vehicle until mine is fixed. It is unacceptable to wait that long for a part, and then refusing to at least supply me with another vehicle!! I bought their top of the range vehicle . IF ANYBODY BUY A MAHINDRA, YOU TAKE A BIG CHANCE. THEY CANNOT SUPPLY PARTS OR ANY SERVICE!!!!