Paid Order not delivered

Made an order yesterday. Driver tried to call me but I was in a bad reception area. I moved to where my signal was better and called back within two minutes. He did not bother to answer any of my seven attempts to call him. I then received a message that my order was delivered. I later confirmed with our guard members whether an order was left with them. They said nobody approached them with an order. The UberEats support platform then told me they cannot refund me because their driver followed their company policy and I will not be refunded the value of my order. I even paid a tip for the driver and he had the odecity to send a message via their app to thank me. I gave very specific instruction with my order, which he clearly did not follow. I would appreciate if anyone reading this review can point me in a direction where I take further steps against this daylight ******* - R367 is not small change.