Recently changed from Telstra to Aussiebroadband for NBN/LANDLINE. I took the correct steps:
1. Place transfer/order on AussieBroadband website
2. Wait Till Phone line / nbn is fully transferred before canceling on Telstra.
NBN transferred the next day, however, I was told to wait a week for the phone to transfer over. I called Aussiebroadband a week or so later and asked about the phone line because it was still not connected and they said that they can't transfer it because Telstra has made my landline inactive and that they have previously done this before to customers when an NBN transfer has been submitted (She even stated that they've been taken to court before for it). They told me to call Telstra and get them to reactivate it.
I called Telstra and they acted as if it was Aussiebroadbands fault and that they had no idea why it was canceled. She even started suggesting that I must have called up and placed an order to cancel. They then told me that I need to sign back up to the cheapest landline deal (they will give credit to cover) and have an NBN technician come out and check my landline (even though I was just with them and it was working). I get a call the day the nbn tech was meant to come out and they end up telling me that I need cancel my internet with Aussie broadband then reconnect back to Telstra for a month to get my phone number back - they even tried hitting me with the "Why did you leave to begin with" and "We have the best internet, better then aussiebroadband". On the Telstra website it still says no tech has come out and I need to reschedule - which is a bit sus seeing as they said they already came out.
I hung up, called Aussiebroadband and now they're attempting to get my number back for me ($30 charge if they get it back), if not, I'll just grab a new number.
Bit of a piss-take just to change internet/phone providers.
(profanity) Telstra.
Complain to TIO