Ola — Extra charges claimed by OLA without intimation

I had a ride with OLA rental on 14.02.22. At the time of booking fare was shown Rs. 249 but after completing the trip fare became Rs. 500.

They charged Rs. 212.18 against fare increase and tax Rs. 35.32 which was absolutely without intimation.

I registered complaint via phone and mail also, but they have not refunded the amount.

Moreover, they are saying that they have intimated me abount the additional amount which is a complete lie.

I need Rs. 247.50 to be returned with immediate effect.