National Highways Authority Of India [NHAI] — my car damaged due to boom barrier

Address:

No 55/3, 3rd Floor, 1st Cross, kuvempu Road, Udayanagar, Bangalore 560016, 560016

I'm on the way to Pondicherry. While I'm crossing from Bangalore Hosur highways I paid a toll amount by fast tag. By the way the staff in toll gate told to move on and boom barrier was opened I jus moved and suddenly it fell down on my car and that results in damage of my car roof. If anything serious issue happed means who will be the responsible???? Very cheap, even I asked her about this she spoke with her very rudely. Her name is POONGUDI. She has very much attitude. My foot let her attitude in her home not in working place. Even though its her mistake, she didn't asked sorry also. I had also asked for cc TV footage they made me to wait 2 hours and telling it was visible only the number plates of vehicle. I'm I fool to listen all these??? I'm I bought a car from local garage??? I have invested. Please guide them how to interact with customers. It's my request.