Ola Cabs / Ani Technologies — regarding overcharge of fare

Address:

NEAR PVR kalpuraksha appartment challaghatta Banga, 560017

I hv taken a ride on 27 feb from challaghatta to yeshwantpur railway station. When i started the ride the fare showing was 287/-. Once i reached the dest, i changed the drop location to challaghatta to return back n this was advised by cab driver. I told him that i vl add a stop but he insisted on to change the drop location. Still the fare was showing 367/- fine. Once i reached drop location it shows 888/-. As per karnataka transport department regulations a class d taxi can maximum charge u 22/km irrespective of peak time or low demand time. Now i have written eight mails but they r not giving me rufund