There were 2 separate promotions. One was for Flocked Stumpy (which until the last week or so of the promo, you could only win if you had bought the right chip bag and entered) and the others were for the random Skylander.
From what it seems, near the end of distribution, most people that got randoms only got some of them. If you really wanted all your winnings, you could call in and see if they'll send them, but for the most part I think they're done.