Don't do anything to the card, don't rewrite any files on it, don't format it, just ignore all those advices and use a proper recovery software like this one: http://shop.sandisk.com/store/sdiskus/en_US/DisplayCategoryProductListPage/ThemeID.9295600/parentCategoryID.57159900/categoryID.57160000
If it's hardware related, not much you can do now, it's a lesson you've learnt, always BACK UP your importand data, use Cubby, Dropbox, iCloud if you're using Apple devices etc