Hi @chefren, we're glad to know that its now working. In the event that you'll have queries in the future do not hesitate to create a new thread here in our community.
Finally works. The root cause seems to be having the old phone number. This means whenever tech support does some sort of refresh Telstra or Optus loose some config they need to recreate as in when I first got the line. The only permanent fix for this was suggested to be changing the number so it will be with TPG and so there will be no need for this anymore. I have no attachment to the number itself so I will probably do this in the future when I can organise the potential 2 day wait for this to be done.