Manufacturing Defect

Dear All, My name is Sourabh Agarwal, I am facing some issues with my Renault Kwid RXT 1.0 Ltr Manual Car. I purchased the vehicle with my hard earned money on 19th Mar 2018. March 18 manufactured model. (Roughly 8 months back) from Renault, Unnati Vehicles, Fatimanagar, Pune. Suddenly after 1.5 months, (810 Kms running only) my vehicle had a engine starting / ignition problem. After inserting the key the car didnt start. Showed it to Renault Showroom / Service centre, they took the battery to check the issue, it took 10 days to rectify and then initially they said that there is no issue with battery as we have got the report from Amaron that battery is good. I said if battery is good then there is some manufacturing defect in the car, for which they didnt have any answer. Later after few more days, they said that the battery is charged now and fitted the same battery and still did not replace it. Also they did the first free servicing at 810 kms without informing. My question is if the battery was good then how it got discharged completely? And why they have to charge it all again if its good? 2nd Problem: Yesterday ie, 11 Nov 2018 (1967 kms running in 8 months), suddenly while driving, the steering of the car became very smooth or rather over smooth also the accelerator pedal became very smooth and the car was speeding up like anything, suddenly the rpm increased. How come these things can happen ? I am worried and concerned for the safety and accidents can happen if the car steering and accelerator is becoming very smooth. Kindly inspect my car properly and provide the solution. or else replace the car if its manufacturing defect. I am 100% sure its manufacturing defect. Sourabh Agarwal.