Unhappy customer

I would like to lay a formal complaint as to how my previous order was handled by the Uber support team. I was initially advised that R71.80 would be credited into my account for a cancelled order and I received an email from the support team that funds had been credited into my account thereafter I made a order at Mcdonalds amounting to R62.50 which was not deducted from my account of which the driver that delivered my order and myself notified the support team to which I was advised that they would look into the matter and the driver advised that I would not pay for the order...to this day I have an outstanding amount with Uber eats that has not yet been resolved