After pulling up to a speaker at 5:30 am and waiting over 10 minutes to be served we pulled up to the window. The young man at the window threw up his hands and made us wait over ten minutes to order. We ordered and he didn’t say anything so my Father(who is older) said«Don’t you have anything else to say?» The young man stood there and said nothing. So then he said, «Thank you. You should have said thank you.» We pulled to the next window just in time to hear him say to the other peron, «Make that asshole wait for his coffee.» Fifteen minutes later we got our items and talked with the manager who just smiled and said nothing and told us to have a good day.