This number calls my company line multiple times a day, and there is NEVER a person or even a recording on the other side. It's literally dead air every time they call. I even called the number back, and it rang for about a whole minute, and then just stopped ringing. No voicemail or business recording. Nothing. The line just went dead. This should be illegal. They are interrupting business for absolutely NO reason. No sales attempt, no collection attempt, nothing.... Just calling to call an