Ola Cabs / Ani Technologies — didn't travelled with ola still charged whole trip money

Address:

400076

Thursday 19 march i had booked ola cab booking num-osn[protected]
For family in share
Driver was already dropping earlier passanger he took 30 minutes to reach to given pick up point. Driver still reched to 500 mtrs away from point.
When he reached, 2 passanger boarded cab.
Now ola receives next share booking opposite my trip route. How can ola take booking of opposite direction. I thought sharing trips is with passengers that are traveling on same direction.
Thinking it will take another hour in traffic i had cancelled trip.
Ola debited whole trip money from ola money instead of charging cancellation fees.
I asked them to charge rs-50 cancellation fees because i have not traveled with them even a inch. How they can charge for whole trip.