Hyundai Motor India — damage of ecm in grand i10 magna

Address:

500076

I have bought grand i10 car in may 2015 and i have used for 40000 kms. Recently when i was driving with high speed and car stopped suddenly. I have complained same in the service centre. They have taken almost 3 weeks to find the problem and now they have said we have rectified the problem with ecm. But i dont feel safe driving the vehicle, there is no point in buying hyundai cars as i have seen same type of problem with other customers also. I would like to get the new ecm with free of cost am not in a position to afford it.
Please help me.

Problem: damage of ecm unit with in two years of purchase of car.
Desirable solution: want hyundai to replace the part with free of cost, as i am not feeling safe while driving with the repaired ecm.