The order I placed as one should wait not a very long period of time as usual and received my order number

The order I placed as one should wait not a very long period of time as usual and received my order number. Then I got to get it after a few minutes after certain orders after me... The list is two big Mac meal and one big Mac with four nuggets and two cokes with one cappy juice. Only to find when I got home I'm short with one Big mag and nuggets... Order number 3200 to be specific