Very bad qualityof parts replaced by Service center

I am using duster car from year 2013. i am facing lots of quality issues regarding my car. Some of the serious issues are as mention below:- 1) ac direction knobe- they have changed it almost 10 times but still the quality is very bad. Last time they changed it in 3days n when they return my car i asked their person to rotate the knob. But they were unable to rotate n broken something from inside that knobe. the condition is very frustrating for me. 2)water jet for wiper- Not working properly even after lots of complaint. 3) door lock- door lock from driver end is not working properly even after lots of complaints. 4)sterio- sterio is not working properly even after lots of complaint. 5)gear problem- from the time of purchase i have problem regarding the gear (the 1st gear struct any time from the 15 day of purchase). they jst told me they have oiled the gear n this will not repeat again everytime. Now the condition is worst. Vikas gupta 9250XXXXXX

HR51XXXXXX- DUSTER