Broken Tata Xenon with no solution

The car was booked on the 14th of October 2015 for not starting at Imperial Germiston . It was discovered that rats ate wires but even if that is fixed the car won't start, Up to date they are unable to diagnose the problem. The car is still under warranty and they are not communicating with us, we always call them and they promise that they will get back to us. They say that their reading/diagnosing machine is not comunicating with them, however they ordered a new one which was due to be delivered on Wednesday 21 October 2015 and promised to contact me Friday 23 October 2015 of which they didn't. I bought the car two months ago at Imperial Pretoria North,sales person is Dumisani Hlatshwayo.We need a loan car and I am told to wait until Tuesday may- be they might have one. Please help.<br> <br> Jeanette Mojalefa