Uber India — trip fare issues

Address:	Khordha, Odisha, 751006
Website:	www.uber.com

I took a an uber cab for a ride of about 10 kms on 31st of may, 2018. At the end of the trip, the driver's device displayed that the trip fare amounted to rs. 172. I paid the required amount but when i received the bill receipt in the uber app, it showed the trip fare amounted to rs. 152. I dont understand how did this difference of rs. 20 arise. When i complained uber via email i did not get any satisfactory response. They said that the extra cash of rs. 20 paid to the driver is out of the uber system and hence it cannot be resolved in any way. I am very dissatisfied by this.