Ola Cabs / Ani Technologies — estimated fare was mistaken and not properly compensated

Address:

12,Panchayat colony radha nagar chrompet chennai, Chennai, Tamil Nadu, 600044

We booked a suv to periyapalam which was abt 110 km round trip with estimated fare of 1750 but i was charged 31000 where they have added extra km in the trip and when i got the complain then compensation came as coupon which i have no use whatsoever as we are not frequent with cabs the compensated amount is around 1150 and its almost like a rip off and they wont refund the cash and i have to go an another dumb trip for their mistake it not fair and. I need the money as i had to put in the money as it came over the estimation it a total loss for me