No Service, re. Lost Items

I have lost keys, I only to discovered 2 days afterwards that I lost it, I contacted Via the Uber App the last 2 drivers, and said that I lost my keys in the car. I got a call back from 1 driver, to say he has the keys and will return it at the Uber Rate. Till now no response at all, Just cleverly worded response's from UBER. They can clearly see who the drivers are and initiate communication for the return of my keys, but no response at all. Even on the app its so difficult to communicate and get assistance. Can someone help please *** (NIGEL)