I guess you're more used to having this type of thing happen than I'd be.
My thought was, "Dude...... You had the head there!!!!! How could you get it wrong???".
That is almost exactly what I said! The guy knew he made a mistake as soon as I sent him some pictures showing that the parts didn't fit on the head. They screwed up, maybe too busy to pay attention or new employees or something else. Hopefully they get it correct on the second try.
