Very disappointed

I placed an order, and it was accepted by Nando's. My order was confirmed and the status read "preparing your order". So now I'm waiting for my food, an hour later I receive a message saying that they can't process my food? I find this unacceptable because if I'd known earlier, I would've made another plan but now I'm stuck at home, starving!

UberEats, please work on your platform, I'm very disappointed.