Ola cab chennai - Overly charged for Outstation Cab service

Jan**th **** I took Ola cab from Chennai to Bangalore at *.**pm and reached Bangalore around *am midnight. For ***km the standard charges should be @Rs.**/km totaling Rs.**** plus taxes! But taxes alone they charged me Rs. **** totaling Rs.**** for one way Chennai to Bangalore. I was reluctant and not ok to pay the money and called OLA support couple of times and no one picked the call. And the driver was pushing me to make the payment which I refused. But he begged me claiming he can’t take any more rides without I clear this ride charges! I said it unfair charges and he also agreed for the same. He also said the same day morning he dropped a person from Bangalore to Chennai and the bill was just Rs.*k+. Since he pleaded and confirmed me that OLA with refund the excess amount billed next day, on humanity grounds I helped him by paying the full unfair bill. Next day before I went to work I called OLA support and explained the problem. He understood and made me to wait in line to connect with the right department for refund. But he never connected me. Finally I hung the phone. From that day till today I didn’t not get any resolution from OLA. So I also didn’t make my pending payment to OLA and waited for them to solve the problem. Whenever I call them later, every new customer support personal simply says there is no complain raised by me for wrong billing! But I always insisted the customer support person to register the complain. Due to negligence they didn’t register the complain and penalising me by adding late payment fees for my due to OLA and giving severe mental trauma! I am getting fed up on these cheating attitude of this company and look forward for a solution to get rid of this l. Kindly help,