Unlinking a deleted account from an iOS device
Does anyone know a way of unlinking a deleted account from an iOS device, short of doing a factory reset?  I'm assuming the account is linked to the UDID of the device.  Doesn't seem to be a unique installation ID as I can delete the app, reinstall and it still remains linked to the deleted account.
So, you might ask why this is a problem, why don't you just log out?  Well because it can't tell the difference between a deleted account (I submitted a deletion request) and a banned account.  So it thinks my old account is banned.  If the app thinks you're using a banned account, you get a splash screen with no menu options, you cannot do anything from that screen.
As I mentioned before, deleting the app and reinstalling does nothing.
Well, you might ask yourself, why don't you lodge a support ticket?  I did that too... in fact I've lodged three tickets.  Initially, their response will indicate that they don't really understand that I'm talking about a deleted and not banned account.  Secondly, they ask me for my current IGN.  Well that doesn't work either, because I have a new account with the same IGN as the old one.  They ask me for my email address... so fine.  I send all the information through and I never get a reply to that, eventually I get a reply saying that they're waiting on information from me.  I email back saying I've already sent it, to which I never get a follow up.  This same sequence has happened three times!!
So, how do I unlink an account?  I don't want to do a factory reset, support are not replying and I've had a search and found nothing useful.