Lying, greedy driver

I booked a trip to Germiston which showed me R220. I always pay cash for all my trips. I gave the driver the R220 cash only to discover the next day when I wanted to book a ride with Uber again that the trip was actually R185 and the driver claimed that I only paid R150. Now Uber is saying I owe them R35 and I can't book any trips unless paid. The driver is so sly, greedy and con man. He pocketed R70 cash into his pocket, still get paid for ride and made me bad with Uber. How can people be so dishonest?