Myles Automotive Technologies Private Limited - Safety deposit refund the incorrect amount

I rented a black Ford Figo car with registration ka**ae**** from Myles cars jp Nagar branch on **th Jan **** (booking id:*******) and paid the security deposit of **** INR along with rental charge **** inr. While returning the car there was damage to the right wing mirror of the car (happened because a car in opposite lane was overtaking in the wrong lane) and the agency told they will reduce the damage charges from the security deposit. After that, there was no response from them for a week and after that, I called their customer care on Jan **st, they closed the booking right away and reduced ****.** INR from security deposit without any explanation. I again contacted their customer care asking for the breakdown of repair charges and all I got was a damage invoice pdf (attached) which had no such breakdown but simply mentions total damage amount = ****.** INR with only tax breakdown. A right wing mirror of Ford Figo costs around ****-**** INR. So almost thrice the amount for repair is alarming. So I again prompted them for the invoice from the workshop from Feb * onwards. I have been constantly following up on call and email as they were not able to produce said invoice or explanation to date. I suspect they are overcharging me and keeping the rest of the amount after repair for themselves. Please help me save my hard earned money