This was as bad as it gets.  I waited in the drive through that evening for 5 minutes before driving up to the window.  I assumed there was something wrong with the speaker or mike.  When I got to the window there was 2 guys chatting with each other and very loud music playing inside.  I sat there for about 3 minutes while being completely ignored.  I finally left.  I promise I will never go through that drive through again.