PATHETIC service from Mcdonalds

This is not the first time that I did not get the food that I have ordered. When I got home I opened the bags just to see that they did not gave me a bigmac burger.....this burger was for my little girl....I payed for the burger but didn't receive it....they took my slip with my order, and still they get my order wrong!! I called them and asked them to deliver it to me, they said it would be 15minutes, its an hour later and i am still waiting ...they didn't even asked my phonenumber for the delivery. ..It's PATHETIC!!! Now my little girl have nothing to eat....I'm very dissapointed with this service!!! I called them in this hour 4 times and they didn't answer it.....