Uber needs to owe up to their Driver mistakes and absolute rudeness

I'm absolutely disgusted with Uber's support service. I left my keys in an Uber and report it to support - this guy named Walter refused to answer my calls nor reply to accordingly "Uber support" messages. When i eventually got hold of him, he asked how much petrol money was i going to give him for returning my keys. I reported this to Uber and guess what they had to say. "All drivers are independent contractors" yes we get that but you are solely responsible to ensure that these drivers to return items and ensure customers are happy. You need to dismiss such rude drivers and employ people with high professionalism. I would like Uber support to reply to this message as I'm a customer and they would need to take full responsibility for the replacement of the keys.