Ford India — break didn't work

I just want to submit this complaint regarding abs breaks which didn't work when I was driving in spiti valley.
I have ford Eco sport bought it on this fab from chennai ford
But car breaks not working in bumping roads, and in spiti I don't know how I serviced, when I tried to stop it
It made a really noisy sound and stopped after 100 feet or more
I already called and inform, but also want to write it down for other safety
I really like the car, but now I m really afraid to drive it .plz do concern abt it
Thaks