Frequently, almost daily, we have calls into our main office voicemail number from 763-200-4511. Usually just hang-ups. It has been going on for long while now...if a message was ever left it was apparently not worthy of forwarding to anyone. Based on the other similar explanations this is a Spam caller.
I also experienced static in the background, a timid sounding lady asked for an employee's name that didn't exist. There was a definite language barrier, but she was incredibly polite about it. Nonetheless, I suspect that it is some kind of call center, possibly a phishing scam.
Auto dialed we presume. Persistent nuisance calls. Some times static, most times call center chatter and noises. It doesn't appear they realize they're connected.
Foreign speaking man called and asked for an employee that has never worked with us. He stated that he did and was head of HR. I told him he was mistaken, we do not have anybody by that name that has ever worked here. He hung up