Just received this email from them:
Thank you for playing the Great Southern Bank Instant Win Swag Snag Sweepstakes on Facebook! After extensive research, we have discovered that we do not need to collect information from you regarding a 1099 tax reporting form. I apologize for the misunderstanding. As a result, we will be securely destroying the copy of the form you provided to us and you will not receive a form related to your prize from the IRS. We apologize for any confusion this may have caused you. If you have any questions about this, please let me know.
Once again, thank you for playing the Great Southern Bank Instant Win Swag Snag Sweepstakes on Facebook and congratulations on being a winner! Your prize has been ordered and you will receive it within the next two weeks.
Thank you,