Ola Cabs / Ani Technologies — Grievance regarding overcharging

On 5th of Feb 2021, my father had to go to hospital. He launched the Ola app, saw the estimated fare of Rs. 200 something and booked the ride for a journey of about 23 KM. However during the end of the trip dad got a shock by seeing the bill at Rs. 437. I have been trying to reason this with Ola but they claim the destination was changed and the bill amount is correct. We have made several visit to the same location and we know Rs. 437 is at least Rs. 100 higher than regular fare. Ola has been refusing to fix the issue or provide details of changed location.