9/1/16 - called two days in a row now. no message - hangs up when you try to call back. Obviously some robo dial or call center who block incoming calls. Number is blocked on my cell now.
Obviously they will not comply. Maybe consider a call blocker. They start around $40 online. http://800notes.com/nb/search?q=call+blockers In the meanwhile do not answer unknown calls and do not call them back.