I just received one of these calls also. I too don't know answer numbers that I don't recognize.
I also received a text yesterday saying that I had won a Best Buy Gift Card.
The things that I can not understand is that I just updated my "Do Not Call", yet this came through.
This number called me at 11:15 in the morning and when I answered it wounded like they had bad reception and they said my name. I don't know who or what it is!