toomanybooks

It does appear under "Promotions" in my WN online account, so I guess you are out of luck. Of course, some folks got the "3 RT/6 OW for A-List" offer, which I did not.

T&Cs:

Terms and Conditions: Only the Rapid Rewards Member who received this email/offer from Southwest Airlines is eligible for this promotion. Offer is nontransferrable. Member must register for this promotion between January 26, 2015 and February 1, 2015, and registration must be completed prior to commencement of travel. Valid on new reservations booked within the promotional time period. Member’s flight must be booked through southwest.com between January 26, 2015 and February 1, 2015. Member’s flight must be completed between January 26, 2015 and February 28, 2015. A qualifying flight for Rapid Rewards is a one-way revenue flight booked through Southwest Airlines from an origin city to a destination city, including any intermediate stops and/or connections. Rapid Rewards account number must be entered at the time of booking. Rapid Rewards earned points are calculated using base fare. Member will receive 12 bonus points and 12 bonus Tier Qualifying Points per dollar spent on Business Select® Fares, ten bonus points and ten bonus Tier Qualifying Points on Anytime Fares, and six bonus points and six bonus Tier Qualifying Points on Wanna Get Away® Fares. Bonus points are in addition to the standard flight points earned through Rapid Rewards. Bonus points will not count toward A-List, A-List Preferred, or Companion Pass qualification; however, bonus Tier Qualifying Points will count toward A-List and A-List Preferred qualification. Member will receive bonus points within four days after completion of entire ticket. Award, Companion Pass, Southwest Vacations® Packages and reward travel do not qualify for this promotion. Changes made to this itinerary after purchase may eliminate qualification for promotion. All Rapid Rewards rules and regulations apply.