McDonald's

Ordered thru drive thru and paid $12. We went to second window handed just a soda. I asked for the rest of items and they said screen is clear not sure your order. When I get the bag missing items. Refused to give items so I said I'm coming in to talk to manager, who already had receipt but stayed quiet in the background. Claimed I didn't order what I was asking for and then said I'm not getting it for free. I never asked for free and was extremely insulted. Extremely rude. When I finally left because of the rudeness I didn't reorder the other items that originally were ordered but not given then blamed because it wasn't in receipt. When walking out the sales person, which I heard, said he ordered a Diet Coke with that food. Really. Insulting over weight people. Nice! Maybe training is needed for how to work with people, especially revisiting guest.