So as it turns out, mt gox support refuses to provide any answers.
All they do is use (probably standard) replies referring me to their verification process.
I guess to get real answers I'd have to sue ? which seems excessive.
Has anyone gone down that route ? being in the EU myself it's probably easier to go via the french owner ?
In any case: word of warning to anyone considering using mtgox: become verified before putting any money or coins in there !
If you're not, they can use that as justification to freeze your account at any time. no other reason required, no way to unfreeze it without.