I see on the Samsung community support forum someone asked about the promotion and a Samsung moderator said that with the recall the promotions are on hold.
Addition:
SamsungViv
Moderator SamsungViv MODERATOR
Options
yesterday
Re: Note 7 Promotion for 256 GB memory card Dissatifaction
Hey there, nodnyl. Thank you for reaching out to the Community. While I realize that all the Note 7 promotions have been put on a slight hold due to this Exchange program, I'd like to look into this for you a bit more. Can you send me a private message with the picture you sent in of the receipt? I'd ask for it here on the wall but I don't want your IMEI floating around.
Keep in mind that if you'd like to talk to the promotion team directly you are more than welcome to fill out this form and they'll get back to you as soon as they can:
https://helpdesk.prizelogic.com/Tickets/NewWidget?sectionid=1965