Called my cell left no message.

We received 3 calls from this number. When answering no one is there and phone hangs up.

5/9/14 9:29 am
5/9/14 12:11 pm
5/9/14 3:16 pm

Also been bothered by this number twice in the last 24 hours

received no one was there

the number: 540-205-1091 keeps calling me. on caller ID it says "cellular call".........I looked up the area code....it's California....................so, the next time the call came in, I answered it.  WELL, THEY HANG UP ON YOU WHEN THEY HEAR YOUR VOICE.                   They called at 8 a.m. and woke us up!!!!!!!!!   Then they called back at 3 pm and hung up on us again.          I called the number back and a recording states:   your $100.00 Walmart or Target gift card"...............WTF??????????       NO ONE ANSWERED TO TALK TO!!!   [***].