Received a call from this strange number and didn't answer.

Just keeps calling and not leaving a message or when i pick up no one talks

Received 2 calls from this # today, and one from 571-000-0000 yesterday (571 and 703 are in the same area).  No one speaks when I answer, and just quickly disconnects.  Strange.

this number appeared 2 times on caller id, no name, no message.

calls from 571-000-0000 and 703-000-0000 for the past two days.  Didn't Answer and they left now messages.  Called again tonight at 8pm on a friday.  I used some choice expletives and told them to take me off their list and hung up.  It felt wonderful.  A Google search shows them as an Indian Jeweler in Ashburn, VA.