You may have purchased an SD card with a fake/spoofed capacity, which can cause all sorts of issues. This is apparently a pretty big issue with stores like Amazon that comingle inventories from multiple vendors.
I would bet money it was a Microcenter store branded one, the ones they have at the checkout counter. They are what I almost always use and they have never given me issues before. I am also sure I have thrown it into something else at this point though it is difficult to say what.