hah. i actually went through a patch around 100 meters long that was well... not road. not kaccha rasta. basically off-road muddy mini hills. something that only an SUV owners would dare to cross. my linea took quite a beating at the bottom during that patch. i am yet to get the bottom of the car checked. but there was major contact and god knows how much damage my car suffered.
Really sorry to hear about that bro 🙁 Didn't know the ground clearance of Linea was much lower than that of an Indigo. Maybe the stretch got worse now instead of getting better. I went after Monsoon and the stretch was muddy then as well, but not impossible to negotiate in a normal car if you took the correct line. I actually waited for couple of local jeeps to pass and just followed them after seeing what line they took. So almost 3 years & they have not bothered to complete this incomplete stretch, pretty pathetic i would say for a road that is called a NH.
As far as the damage to your car, as long as you didn't hit the axle on a boulder or something, little minor scrapping of the bottom should not be too much of a concern. Had you hit the axle you would have certainly noticed some weird noises coming from you car by now!