That was my first time having Citi bank accounts. My points were redeemed for Red Cross donations, so 100 points == $1.
So you specifically made a donation to the Red Cross using 40,000 TYP, for a declared value of $400, and Citi issued you a 1099-MISC for $800? Or was the donation technically undefined in value?
If they said it was worth $400 when you donated, that seems really weird you got a $800 value (although weird=Citibank's logic). I assume you just adjusted your 1040, since this seems absolutely a clear case of proving the 1099-MISC was over-inflated.