I'm terribly sorry for our delayed response and to hear you've gone to a lot of trouble trying to notify us of your home move. We are aware that our helplines are a lot busier than usual and apologise for the frustration caused.
Have you tried using our text service instead on 0753 305 1809? They'll be able to process the home move for you if you haven't been able to already. Sadly it's not something we can process here from the forums.