Tata tigor camplants

In 2002 i have bought tata indica and my experience was horrible at that tym i decided not to buy any car which belongs to tata but after the reviews of tata tiago and tata tigor on ashtmi i bought tata tigor trusting the tata brand again on 28 th september 2017 my tigor was in my hand. I was coming back to home on my tigor and was happy with the car but suddenly something happend that changed my mind completely the tigor suddenly stop working i was at my normal speed the car now tell me what am i suppose to do i have spent lot of money on it and i am feeling disgusted please give my money back or else change the car. I donot want to repair it. It is a defected piece that is give to me. Do let me know your response.