Bad Service of Showroom Navjivan Plaza , Bharuch

We had purchased three I 20 Sportz, Diesel from your Hundai Showroom Bharuch (Navjivan Motor Plaza, Bharuch)in July and Aug,2017. GJ16CB4948 GJ16CB0693 GJ16CB0728 Apart from three car, two was running well but one car (GJ16CB0728), having a problem of Clutch (i.e too much hard), I had complain to showroom with in one week of purchase of car to sales manager Mr.Snehal and they had asked to come showroom then I go to showroom and adviser check the car and saying that since this was new car so may be with in one month Clutch will be fine but not got fine,so in my first service also I had complain about this but adviser saying with in five month you will get Clutch fine but not got and also in Second Service , I had not found satisfactory answer from your Dealer. In each complain , sales manager Mr.Snehal was forwarding to Adviser but no satisfactory answer. Since this was a manufacturing defect and I had complain about 7 to 8 times to Mr. Snehal and also adviser at time of purchase to till date but not received satisfactory answer. Now they are asking 50 % amount of repairing of Clutch.