Mahindra And Mahindra — complaint regarding the bad service of the car twice

Address:	Ahmedabad, Gujarat, 380051
Website:	Mahindra

Hie! I am zakir bagban and i purchase the mahindra xuv 500 numbered gj 01 rg 2892 from sheetal motors in ahmedabad in the year 2015.
My car went for service thrice in a month the employees says the problem will be solved but never do so. Everytime they say that they are changing this and that but the car is never up to the mark, my car is under warranty. From the last 4 to 5 months the service is giving poor results, i spoke to the manager also but no results of that also, they say the problem will be alright but it is never so, lastly i had to put it up here, now again its the time for service i dont understand where should i go, very disappointed.
Hope for a better result from here