Nokia India — non functioning of my new nokia 7.2

I had bought nokia 7.2 from a mobile shop at kalpetta, wayanad, kerala on 13.01.2020. From a few weeks after i bought it,. It showed some lagging when using it. At first i thought it's nothing to worry so i neglected it. But now it's been severe and most of the times i have to restart my phone to use it. Its touch pad suddenly goes nonfunctional. Nothing work after that. I'm facing severe problems in using even basic functions of my phone. Please replace it or refund the whole amount i paid.