Break problem in nextgen verna-very serious

There is a big safety concern.I bought it in first lot.When it was launched.The breaks had serious problem.Noticed and informed but was not taken seriously.When sudden breaking (In emergency) is done the break just not respond and kicks back with sound.Thus the car do not stop.I almost met accident few times and got saved at the last moment.Not driving it now outside city as in speed if this happens it might lead to serious issue.Out of 1 times it will have the same problem five times.It does not happen every time but happens definitely first time after not driving or not putting break for sometime.And if repeated it goes of for few time and after a gap again it comes back.So very uncertain when break will work and when not. My name is Abhijit sharma I would eventually share my number in case do not get resolved in coming months and need to take action against hyundai.