I have been receiving calls from this number for over 2 years now. Not once have they actually spoken to me when I answer. They are silent, then hang up. However, I do have voice mails filled with them speaking to other people, I'm guessing; coworkers or family members. They are laughing, cursing, coughing, etc....for 2,3,4, minutes! So, they know they are calling us, they must get paid by the phone call or something.