WotC has literally stood by the terms to which you agreed upon when you purchased it.
If I tell a customer that I will usually deliver milk to their door the first Sunday of a month, but that I can't promise it to happen every month, and if I miss a month, I'll make sure they get the product that they missed out on the previous month and the next month, and then I miss a month, I would find it crazy that a customer would call me up and complain. I literally informed them, they had to read over the agreement *and* agree to it before they purchased. I followed everything to the letter.