Bad service, bela bela Mac D

I would like to lay a complaint against one of your stores. Today around 15:20 I went to Bela-Bela McDonald and I bought 2 double cheeseburger, 1 Big Mac and 3 chilli cheeseburgers. When we were on the road we realized that they only gave us 4 burgers. I was helped by Christian at the till. She would remember me.