Hyundai Motor India — Service Quality of Hyundai Service Station

Address: S-35, Sriniwaspuri

Hi,
I Bought Hyundai Aura Car(DL7CR8902) in Dec 2020 from Sunrise Hyundai, as I trusted this brand Hyundai I was pretty satisfied with it, but as a service, you failed. You guys are literally failed in this Section, I really wanna pointed toward Mr. Prushottam Gaur(Service Manager of Sunrise Hyundai), As I can think he's the responsible person for every person who goes through sunrise Hyundai service Station. as I'm trying to be more loyal to Hyundai but the quality of service you have given to me is more doubtful than trusting you as a brand.
Let me come to the point now, since I bought this car with my hard-earned money, I have been getting the same problem, again and again, it's been more than EIght times, my car went into Hyundai service station(Sunrise Hyundai Service - I.P Extension), they literally disappointed me every time they fixed my problem with some Jugaad, Believe it or not, it's been 8 times for a brand like Hyundai and for the same issue only and guesses what I have been facing the same problem now again, I want to point out towards Mr. Prushottam as he's the one who was taking responsibility for my issue and since my last service which happened while ago, My Aura car used to have Mileage around 250-290km(Depending Upon Circumstances/full Cng Cylinder), now it hardly goes to 150km with full Cng cylinder,
Are these the Expectation I should have from Hyundai Brand? how do you give a license to a service station which doesn't bother about how many times a consumer comes for the same problem again and again thereafter you give them one more as a compliment?
I will raise this issue till my last breath, I will raise this issue till I see no permanent solution for this. As I can see Sunrise Hyundai is not taking responsibility as it should be.