To everyone asking, yes, I'm sure this is legitimate and we all just won $1,000 from a contest we never entered, seems pretty reasonable to me. Now to just give them all my information and wait.. and wait... and wait...
Or perhaps you could google "prize-patrol.net" and "walmart" to see everyone talking about the scam.
Additional info:
WIRELESS CALLER <5712321398>
Not ported - 4036 NEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)