Did you order them?
Not sure if I was your driver but I do Uber eats and the order I had either yesterday or day before, I double checked as I do with every single order I get. If you don't get what you ordered for, it's more than likely on merchant side, sometimes they get busy and miss items or lazy when it's slow. I would hate to think that a driver took them but in my experience, it's been on the merchant side with missing items. I apologise that you didn't get what you ordered, I know how fustrating that can be for you the customer.
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