Lost my love for mcdonalds

I am super cross. Like alot of mornings I stood in the drive through. I ordered a big mc meal on the board it is 39 and when i got to paying i was charged 49. so i asked why the manager said that i paid them seperatly. i said to him i ordered the meal. i got no colddrink and when i got home i had no patties on my burger. i went back and was told i ate them(this is not the first time. Secunda mcdonalds sucks. The manager said to me i must pay the 49 because he cant make them pay for the mistake. poor service lost my love for mcdonalds