Not necessarily, business decision to keep the customer hanging on in case the girl shows up late. Just a few weeks ago, at an elegant place like Yoko's, I was told to wait 5 minutes... when 5 became 15, I left. Now, one last hail Mary, as I was waiting for my bus, I called, and the lady had FINALLY showed up, 30 minutes late.
Likewise, if it's a wg playing manager, she might be unfamiliar with schedule changes, that the girl has called in sick/abruptly changed work hours, etc.
Or, like has been said, it could be he came, she saw, he didn't conquer.