Audi India — complaint for repairing under warranty for brake problem audi a6 35 tdi no gj 24aa 9500

Engine no czj001831
Repair order no nmp173295 date:- 16/12/2017

I have purchased new audi a6 35 tdi model car no gj 24aa 9500 from audi ahmedabad nixynova motoren pvt ltd. On 21/12/2015. But since last 12 months we are facing problem of high vibrations during when we break the car. For this problems i have put my car in your audi ahmedabad authorized workshop for 4 four times. They have cleaned the break disc and returned me the car. But after 15 days i have faced the same problem of vibration during breaking. And i have also visited your audi ahmedabad authorized workshop. Nyxynova motoren pvt ltd sarkhej bawala road ahmedabad 382210 gujarat india. But they are not changing necessary defective break disc part supplied wth my audi a6 car. I have requested your workshop service adviser to replace the defective parts in warranty because car runs only 12000 kilometer.in last complaint before few months, i have put my car for six working days for my same problem of vibration during breaking, but they have temporary clean the part but the do not changed the parts in warranty. And after 15 days the same problem was continue. I have put my car for four times for the same problem but your ahmadabad authorized audi service station has not done permanent solution.
Pradipkumar d popat