Ola Cabs — I am complaining about payment and billing

Address:	Ghaziabad, Uttar Pradesh
Website:	olacabs.com

I booked a ride from vaishali to janakpuri and total fare was rs. 550, and on same day i booked a ride from janakpuri to vaishali and total fare at the time of booking was rs.863. Cab driver changed the route without any information and as per my knowledge i can't change the route after submiting otp. Driver changed route and ola charged me rs.1023 for that ride. I asked for an explaination so they revert me saying that i asked driver to change route. Ola already charged extra at the time of booking and after that they charged more money for the mistake i didn't do. I want my refund as soon as possible but they are not answering my calls