Ola — Fare charged higher

Prebooked the ride to airport for 14-Oct-22, 3AM. At the time of booking fare was showing as 745 inclusive of toll tax. When I completed the ride I saw I was charged 1226 (745 rs higher than the estimated). I complained 10times at customer support and they all provided the same reason that there is a change in drop location and both locations were Bangalore airport. I still don't understand if both locations are same how could they charge me for change in drop. Their customer support is abusive and unhelpful. Finally I don't have any other option apart from raising it here. I need my money back and want to report such agencies.