...and only 3 hours later...
it was Simms, the Mount Washington store's maintenance man and a ninth-grade dropout, who refused to play the caller's game
Typical hoax exploits working social reflexes. Sometimes to horrifying degree.
But it is worth to remember that the bastard behind the hoax did many calls before reaching a victim he could persuade. Like nine out of ten managers he tried had enough common sense to refuse him.
People aren't that simple and aren't that stupid.