Nexa — service complaint by nexa giving car insurance[accident case of new purchase car]

We have purchased new nexa baleno delta petrol car on 2832017. We met with an accident on navsari highway on 1292017 kiran motors ltd surat was informed about the accident on the spot they told us to put the car in navsari nexa. Then after that no proper resposne is given by any authority person. No one is ready to take the responsibility they are droping on one an other. Please required help and guidance. We are sending photos of car met with accident and invoice copy. We have taken loan for car also.