Who called from 4015151515

I don't know who it is but I want him to stop calling and harassing me and they won't leave me alone

rec'd a call from this number twice 2/26/15 and twice 2/27/15. when I advised him to remove me from list and not to call me he said "F--- YOU"
couldn't understand what he said - strong accent

Called at 6:30 this morning. I did,t answer.When I called the number back I  got a recording from Verizon that I  connected to a number no longer in service.This is not the first call from them.Am blocking the number.

Phone rings I answe noone is there. RI call

4015151515 keep calling No messages left I don't answer ...put on call block