dunkin’ donuts scam?

So i work at a dunkin’ donuts, and a couple months ago, my friend/coworker got a call from a guy with a low, country voice like asking for management, and when she said she wasn’t management, he was like “listen, i need you to isolate yourself. you have to be alone, you can’t let anyone know what you’re doing, you need to take the money out of the register and walk to walmart to meet my colleague.” and she was FREAKED OUT and called the police and everyone. we ruled it as nothing serious. and low and behold, tonight i answer a phone call around the same time as she did, and a country man with a low voice says the same stuff. i didn’t even let him get past ‘isolate yourself” i just said “goodbye sir im not falling for it” and hung up. i’m assuming it’s a scam but im also like scared that maybe he just tried again? is this a popular scam to like different places? please help me sleep better