Yep same here, 2 1/2 months now and they still can't get it right. So I am now playing hard ball. Giving them some of their own back. Intend to cap it off with a TIO complaint. I still have service though but they want me to accept less for the same price.
So far a new NBN compatible modem, working on the credit.
Bottom line, don't accept crap, it's all from the Philippines anyway. Good Aussie jobs gone OS!!