Strike It Rich IX Sweepstakes Sent a letter stating they have been trying to reach me regarding a Prize Entry Clearwater Florida

They send you a notification by mail. The return address in the back of the envelope reads: PO Box 9084 Clearwater, FL 33758. They say were trying to reach you regarding a prize of $1,000,000 and gives an ID number to claim by January,29 2015. They also give you a toll free number to call which is 1-800-975-8599. They also say that if not hear from you by the deadline, this entry ID number will be disqualified and any cash payouts associated with it forfeited. At the bottom there is a signature: E. Wright. The cash payment options are $36,666.67 payable each year for 30 years or an immediate lump sum payment of $550,000.00