Ola Cabs — Charged extra not been told before about tthe extra charges

Address:

Bangalore, Karnataka

I was travelling on 12th sep 2015 from ola cabs from babusapalya to airport when asked the driver he said 600 would be charged and I was prepared for 600 to 650 bugs and when I reached airport I was shocked to see the rate coming to 1053 I was not prepared for this reason being I was not told by the driver that I would be charged so much kindly let me know what should be done on this awaiting reply on the same I need refund on the extra amount charged to me