Did not receive my food

Uber don't even deserve 1 star. I ordered food and did not receive it. To my utmost surprise, they are not willing to refund. The driver was here, but he had someone else order. So he said he will take it back and bring back our order. He never came back. And now Uber refuse to refund. How does that work? Why do I have to pay for something I did not get? Order #738B2. Worst of all, the uber driver changed my order to COMPLETE!! Do not make use of Uber, worst service ever.