Ola Cabs / Ani Technologies — cancelation of ride and extra money charged

On 08/04/2019, i booked an ola cab for tata medical center to belgachia. I contacted the driver and he asked me about my destination. He then himself immediately cancelled the ride which i came to know through the message received by me. When i reached at my destination with a second ola, i found that price was overcharged and i had to pay additionally rs.50/-. Total fare paid by me was rs.385/- (Estimated price shown at the time of booking was rs.335/-). The cab number of second ola by which i performed my journey was wb23c1614. Contact number of first ola driver who himself cancelled the trip was [protected].
I therefore request you to adjust rs.50/- in my subsequent ride.
Thanking you,
Subhabrata ghatak