Calling continually - over 30 calls in less than a week.  Sometimes will call three times in a matter of minutes, as if to trick me into answering.  Never a message, despite voice mail.  One time they did forget to hang up and you could hear people walking and dead-space echos.  What are they calling from a warehouse or a garage? I work weird hours and usually can not answer my phone.  If someone needs me, they need to leave a message or be ignored.