Hi @Keith207, thanks a lot for your post here in the community and I'm sorry to hear of your concerns.
We've been updating our mobile services and the migration from EE to Vodafone required a new SIM sending out. You should have received a text message advising you have up to 14 days to activate the new sim before the old one is terminated, which it appears to have been as things stand.
Now going forwards, any new SIM's do need to be activated in the UK, meaning we'd need to send this to a UK address and it'd also need it activating in the UK too in an unlocked handset for example.
Do you have any UK address with friends or relatives for example that you'd have in mind we can send this to? You would then obviously need to get who we send it to, to arrange them to post the SIM Card to get to you in Australia.
Please don't provide this address publicly, but if you'd like us to arrange this then please respond accordingly and we'll take things from there.