Uber India — poor service and wrong charge

Address:

Khordha, Odisha, 751012

On 27.09.17 my trip was from naturals to hotel swosti premium and i was charged rs. 90/- which is much in excess of rs. 65?- i am charged by other car service.
On the return trip, i waited for over 20 minute after booking from from same pick up point of hotel swosti premium but the car reduced fro 5 minutes or so to 1 minute and remained so and the vehicle did not show up at the pick up point. Having waited too long i cancelled the booking and came to natural by some other arrangement. But an outstanding of some rs.36/- is being shown in my account. I am shocked. This was my first trip using uber and the experience is far from good. I was told by friends that uber usually offers first trip free but instead i have been over charged so the excess amount should be refunded. Further the outstanding should be cancelled as i have not taken the trip as explained. Please confirm.
Thanks.
Sudhindra narayan das. Mb. [protected], bubaneswar - 751012, india,