Uber Eats - Order cancelled - no refund

I placed an order worth almost R600 via the Uber Eats app. Uber Eats cancelled the order in under 5 minutes but deducted the money from my account and did not return it when they cancelled the order.

On top of that, I have only just realized what a nightmare it is to get hold of them! There is no contact information at all, they do not have a customer service email address even. They keep referring you to their Help section of the app, but my issue is not listed in that section.

Can I speak to a HUMAN please!