Incomplete Order!

I bought a meal on the BK app. More specifically W222AP8 where I should've received 2 burgers, chips and a drink, but only received the one burger. This was at Burger King Boksburg. As a weekly customer I find this very annoying as I feel I'm not supposed to check my food seeing I'm paying for it. I don't live close enough to drive back and wait for them to fix it.