Uber bad service nowhere to report

Uber is no longer safe, the drivers are taking advantage of the fact that no action is taken is taken against them when they act anyhow. I use Uber daily for deliveries and I had 2 separate incidents. 1. The driver collected my parcel in Midrand R23 and claimed that the code i gave him wasn't working, and he decided to drop the parcel at uber sandton hub charge me R177. The issue was never resolved. 2. The driver came to collect my parcel but he had another parcel which he asked me to keep for him and he will collect after delivering mine, I didn't understand why i have to stay with the package yet we don't know each other. I found it weird and told him to leave my parcel i them requested another driver. But I was still charged