How long once ATT cancels your order that your number is back eligible for an upgrade?
My 6+ sg 16gb was sitting there in the 10/13-10/22 window. I look at my local Apple store (MD) and they have them in stock, available for pickup today. So I call ATT and cancel my preorder, was told it is instant, and an hour later it says I'm still not eligible for an upgrade.
it should be instant, you should call back asap and get it back before the stock at apple store finishes.