Charged twice

I honestly hardly ever contact my bank and right now I genuinely am wondering why the exist when the can't even help me Uber eats charged me twice for the same order R249. I called them and they are saying I need to wait. Why do I need to wait when all transactions have been accounted for and banked. The R249 that was taken in error is just laying on my account under pending transactions. No one can rectify this and I so badly needed the money why else would I be calling. My bank should have been able to release this funds to me