Abuse of Bank Card payments by Uber

Been using Uber because I am desperate to get my son to school, public transport in shambles. Uber abuses your bank account when paying with bank card. Trip cost R100 then without alerting you they send through an increased payment without your knowledge. It is different on the message, different on the app, then on your bank account the amount is increased. I had a huge issue with them. It takes having to manage your rides ALL the time. Service is bad. A driver last year, took my Cash money, then cancelled the ride. I had to pay for the cancellation then too. Uber NEVER resolved it. You go from pillar to post. Then they just took the money off my bank account.