Uber India — i am complaining about the cash charged by the driver to me instead of my credit card being used for the same ride.?

Address:	New Delhi, Delhi, 110060
Website:	get.uber.com/new-signup/?kwid=kwd-169801042&tar=&gclid=CjwKCAjwuITNBRBFEiwA9N9YEOWb1dgPpJ6KK

This incident happened on 24/08/2017 at bangalore. Destination was between kempagowda international terminal 1 to adarsh palm retreat, deverbisanhalli, ecoworld. Time was 10:15pm. Driver name - arun, from girinagar bangalore. He took me to my destination and asked me that i had to pay 1100 rupees. I told him it was about 850 rupees as per i saw in the app. As i was in the basement i had no network to see my uber app. I anyways gave him 1000 rupees as he told considering that my credit card did not work.
Today on 26/08/2017 when i needed uber again between the same destination return journey to airport, uber app asked me to pay the previous balance by credit card for my first journey for which i had already paid 1000 rupees to arun.in doing so i had to pay again for the first ride and then make the new booking.
I have lost my 1000 rupees to arun and paid 857.52 as well online through debit card. Kindly resole this issue.
Ask the driver why he asked me for money if transaction was to be made through card.???
Or ask concerned uber app person why it was asking for balance if it was already paid.
This miscommunication between the driver and uber company has led me to lose money.