MY SAMSUNG A737 SAYS FREEZE

Question

MY SAMSUNG A737 SAYS FREEZE PHONE SIM UNAVAIBLE WITH I TRIED TO UNLOCK MY PHONE SO I COULD USE AN SUNCOM SIM IN IT I OBVIOUSLY PUT THE WRONG CODE IN AND NO ONE SEEMS TO KNOW HOW TO FIX THE PROBLEM????????this message comes up on my samsung a737 phone 'phone freeze SIM unavailable please contact service provider'. how do i solve this?