Oh that is a pain. Do you know how long the verification code is valid for?
Not sure. I was out in Turkey in April, thought I'd buy a sim card for the Netflix verification and then it'd be sorted for good - the damn thing didn't offer up the verification as an option the whole time I was there! As has been said, I think once your account is marked you're up against it. In hindsight I should have opened a new account while I was out there.