Who called from 4153639713

They called 3 times, when I was able to answer, no-one was on the line, or they just would not speak.  Irritating!

I get a call from this number, and many others, all day long.  I answer and there is no one on the other end.  This just started on 10/21/13.

I have been getting these calls as well. No messages left and when I return the call it doesn't ring then gives me a recorded msg saying my call can not be completed as dialed.

I get these calls from 415.363.9713 constantly and opt not to answer now.  When I try to return the call, there isn't even a ring to this number.

I am getting calls from this number 24/7 and no one is ever on the other end.