I seldom check the activity of my SPG account, but today I found that there were two activities that redeemed once 128 pts and the other 983 pts, both with the description "SPG AX DEFAULT". I haven't redeemed any points for over a year by now. Does anybody know what this might be? It seems like something AMEX did. For the first -128 points, I found that my AMEX SPG card had a -$128 balance due to a refund activity in that month. The second one I really don't see any refund. AMEX takes back pts if you got a refund after the billing cycle closes?