UberEats MUST be held accountable for order issue or missing items (no matter how big or small) for restaurants on and made through the UberEats app

I ordered McDonald's on UberEats the other night, one of the orders was 2 x double cheese burgers, they had the option on the UberEats app to add Nacho Cheese sauce on the burger at an additional cost of R11.90 each, when I received my burgers, both did NOT have nacho cheese on them. I immediately went to the "help" section (support) for this order and informed them what had happened, instead of immediate action and accountability, I got an apology, stated that they would not refund me from the restaurant for the sauce I did not get and then was instructed to review "feedback" my order with the restaurant directly, when I clearly ordered through UberEats, who shifted the blame to the restaurant and by default me, to make it my problem to sort out!

I thought I'd write this, firstly to warn people that this is going on with UberEats (not taking accountability) and secondly, I know R24 is not an amount to rave about and honestly I don't care about the money, IT'S THE PRINCIPAL OF IT, if there are no consequences to this/these issue/s UberEats, and by default Mcdonald's, will continue to get away with these type of actions! I ordered through the UberEats app, UberEats must take care of the issue, no matter what!