UberEats drivers *****ing our cash payment money

I hate how I trusted and enjoyed UberEats service before two drivers did me bad and don't think I'll ever use the service again. So I ordered first Order #C59C9 delivered by Tafadzwa which was a cash payment and total was R138.09 when driver arrived with my order I paid full payment in total didn't even notice he advised I paid R65 only .. I only noticed this issue when I recently ordered another cash payment order #472C8 which Troy delivered but now the issue was when he advised me that my order total was R189.35 but on my app it showed R116.26 and I refuse on the amount and told rather I not take the order only to find out the the First driver ****** me and only advised I only paid R65 instead the full amount which means he took the R73.09 for himself so that I stay owing on the app. We then agreed I will take the order from the 2nd driver and paid him R117 but he said I paid R116😔 ...I'm so disappointed at what your drivers are doing and would like to make sure that this drivers are delt with and pays back the money they took from me because I won't pay the outstanding balance claimed I'm owing.