Got a call but nobody left message

They called called up looking to verify our contact information.They then asked if we had a website address.And then they asked where to send our latest invoice.Wait... what latest invoice? I am the marketing coordinator and I did not authorize any paid advertising with 411.ca. And then he explained that we hadn't talked about that yet. And I said.. talked about what? I have no interest in advertising with you... so why are you sending me an invoice?And then all I heard was"Okay then *click*"This is a scam. They could have got a hold of any one of my staffers and then sent this ridiculous invoice. Do not fall for it guys!

called me, no one answered on their end after I did say hello, then silence from me, they hung up

They called a business line and asked for the boss by first name only. I told him I would see if he is available and then they hung up.

Would not leave their name or what they wanted

Calls to our office in Northern BC.  Waits until the phone is answered and then hangs up.  Very annoying!