Tata Motors — New car throttle delay

Hello, i bought nexon diesel xz+ s in January and from that day i’m facing delay in throttle response which is making me unhappy while driving and i am facing this issue only in nexon i drove many other brands cars but there is no such issue. And 1 heared that in bs6.2 is is cleared but what about us who bought 2 months before .
People invests there hard earned money and trusted on indian brand which we can get issues is not good please look into it and solve my matter. Many nexon owners having such issue.
Thank you
Proud tata owner