Surprise, surprise. The morons called yet again, this time, today at 1512 hours. I went through the same pick up but don't speak and the call disconnected itself. They are some persistent anal sphincters.
This number called our business today at 1621 hours. Caller ID showed "Name Unknown" and with an unfamiliar number I was pretty certain it was a scam artist. So I picked up the phone but said nothing. There was nothing at the other end so it must have been an auto-dialing system waiting to hear a voice before either triggering an idiot-message (likely an illegal one) or transferring the call to the next available scam artist. As I said nothing, the call disconnected itself after a moment.
And these morons just called again, this time, today at 1133 hours. I did the same as before, pick up without saying anything. The call disconnected. Persistent pests!