@Purple Lady thanks for that link.
So the problem seems to be that Kobo doesn't actually have the book. The publisher may not have released it. That's happened to me before too. There's a miscom somewhere along the line.
But overall, I've bought hundreds of ebooks from Kobo (yes I mean hundreds, maybe 500 or 600 or more
) and I've had a minute amount of problems, so all in all things do seem to work out.