Dunkin' Donuts

I was ordering 2 donuts and the guy cannot hear me so I said "I want 2 donuts" on a loud voice, then he told me to come to the front window when I pulled up I heard the guy cursed at me, my wife heard it too... So I went inside the store and asked for the manager, he said the manager wasnt there but I know that guy was him, I asked for his name and he gave it to me... (Patrick) I dont know if that was his real name... (Indian guy) I told him you dont have to curse at me... Is that kind of owner/manager do they have?
Poor customer service.