I keep getting calls from this 5 digit number. I don't answer and they don't leave a message and if I do answer and ask them who they are they hang up on me.

Just got a call from same number saying a check didn't go through at a local big box store and wanted me to clear it up over the phone. I said no and she said I would receive a letter in the mail.

Received text on 06-29-2012.  It just said  TEST CALL  no idea who it is.....

I believe it's a NASCAR driver choice contest to choose which of the top four qualifying drivers will finish highest.  I sent a text to the number and was answered with a "test registration" message.

34563, SHOULD/SUPPOSED TO BE "NASCARS 'FASTEST DRIVER CHALLENGE'"
BENN A FEW TIMES NOTIFIED EA. WK.(REMINDER 2 PLAY/ENTER WK.PICS.), AM SIGNED UP BUT NOT GETTING APP TO "PLAY" EA. WK. NOW. HARD 2 FIND. SUPPOSED TO BE " ART:FASTEST DRIVER CHALLENGE. I AM @ A TIFF HERE TOO!!???