Scam City

When I first started at this job, I got a call stating we had ordered toner and they just needed to verify a model number and then they'd send it out. I assumed it had been ordered by the person I had replaced, so I gave them the model number. A few days later we received 2 toner cartridges and a bill for about $1,700 that stated I had ordered them. Come to find out, it was a big scam that you can read about here and here. (That last one calls me "unwitting". I was new!)

So anyway over the past month I've received about 20 phone calls from different people asking for the model number of our copier, and when I ask them what company they are with they hang up. Today was different. This is how the conversation went:

Guy: "I'm calling to update our records. What's the model number of your copy machine?"
Me: "I would ask what company you're with, but I know you'll just hang up."
Guy: "What are you talking about? I'm not going to hang up. I'm with Office Copiers, Inc."
Me: "Never heard of it."
Guy: "You've probably always talked to Tom Anderson."
Me: "Never heard of him."
Guy: "You're at (INSERT OUR ADDRESS HERE), right?"
Me: "You can find that in the Yellow Pages. Let me guess, you're going to send us toner and claim we ordered it and bill us for it."
Guy: "No. I'm just calling to update our records."
Me: "Well, you're not with the company we order toner from or the company that maintenances our copiers, so I'm not going to give you a model number."
Guy: "You probably usually talk to Mike."
Me: "Never heard of him."
Guy: "I could stop by later if that would be easier."
Me: "Even if you come here, I still won't give you any information."
Guy: "I can hold if you want to find someone to approve it."
Me: "I'm the one who would approve it. And I'm not going to."
Guy: "I'll hold all day if you want me to."
Me: "You can hold if you want, but I'm not going to give you any information."
Guy: "I'll just call back later." And then he hung up.