Ola Cabs — My travel yesterday dated 10th may

Address:

Bangalore, Karnataka, 560067

My Invoice amount was 575 but i have been charged Rs. 900. The driver was insisting that the bill is wrong and he has spoken to his call centre and they have told him to charge this amount. He also insisted that i need to pay the toll though it was not applicable and asked forRs. 875. When i handed over Rs. 900 he told me that he does not have change.
Please let me know what I need to do as I had to comply due to my flight timing.