D’oh! or is that Dough!?

Does this ever happen to you? You buy a 5 kg bag of unbleached white flour, but when you get it home and open it you realize you’ve bought a bag of whole wheat flour instead? This happened to me not once, but twice in a row. And the second time I was being careful not to make the same mistake again. I suspect that the bag somehow transformed after I picked it up and before I got it to the checkout. Or maybe the magical transmogrification occurred at home in the cupboard? In any case, now I have more whole wheat flour than I can possibly use, not being, you know, a commercial bakery.