Tata Motors — Manufacturing defect of rear twist beam

My Tata tigor XZ+ 2019 model is facing a crack in the rear twist beam.It is purely the manufacturing defect and the service centre is not replacing the part free of cost as the warrenty period is over. As it is due to the manufacturing defect the company should need to replace the part free of cost.Due to this crack it is very risky to drive the car and the company should consider this issue seriously as I came to know that this issue is facing not to me only.