endless problems with Tata vehicle purchased!!!

I purchased a demo model Tata from Rata Rand burg in Feb 2014. The vehicle was purchased to minimise our operational costs and optimise our resources. The first issue we were faced with was a break down in Umtata. The vehicle was towed to the eastern Cape and 'assessed' we were accused of fitting an aftermarket oil pipe and we're to be held liable for the repair costs. It also so happened to turn out that the clutch kit needed to be replaced. After 3 months and constant arguing we managed to get our vehicles back to our factory in germiston with Tata acknowledging and accepting the costs. Within a few weeks of return of the vehicle we started to experience ignition problems. A fuss was also put up with regards to warranty and service. A month later we received our vehicles back with our fleet management system uninstalled (R5000 system). A few weeks later the ignition issues persist and my vehicle has now been in the germiston garage for a period of three weeks. Once again refusing to accept the costs to repair and putting up a needless fuss. This vehicle has been purchased a year ago agony to date only been used for a gone period of 5 or so months. A very poor product!!