A wonderful teaching moment was missed. I don't expect clerks to know anything and I would have said something in this situation, but then I was a teacher for many years. I remember arguing with a custom drapery clerk and telling her that her measurements were wrong. I went through them carefully with her drawing sketches and writing calculations. She insisted hers were correct and the work room would know how what to do from what she had written. The draperies were wrong, the manager saw the mistake immediately, the order had to be redone and the clerk was let go.