Disappointed with Uber poor communication and bad trip with dishonest driver!

On Saturday I requested an Uber, which I use daily as I feel it is safe and because I uber to and from work on a daily basis. At around 7:30pm I was picked up from work in Bryanston and driven to Jackal Creek however upon entering the complex, I had my phone in my hand as I used it to call out to the driver the code that was given to gain entry to the complex. After being dropped off I immediately noticed that my phone was left on the back seat and tried to contact the driver from the app as he had just driven off. The driver did not answer and after countless contact request forms being submitted, the driver had not even called once! The next morning I tried to contact driver again and the option to call the driver was replaced with a message saying "We're glad to hear that your item was returned" when it never was nor did the driver even attempt to contact me once!! The drivers name was Melvin and drove a Grey Toyota Agya LP20NMGP. The fact that he chose to not answer or contact me back at any moment proves he saw and decided to ***** the phone since he even updated on the app that he returned my iPhone when he did not at all, my phone has been off whilst it was on just after leaving the Uber. Uber is also the worst to get any help from as there is no contact number to reach them on or even an email address to write to as everything must be done on the app which is not even getting back to me after 48 hours has now lapsed. I swear I am done with Uber after this