Hi @laijanet ,
Thanks for raising this to us, we are sad to learn that you're having issues with the phone service. We recommend the best thing to do first is check if there's an outage.
Check our Service Status page for any known outages.
If you're on NBN, we have created this article that can guide you on How to Check for NBN Network Outage
If there are no known outages in your area, you can proceed with the troubleshooting steps indicated on this link : Troubleshooting No Internet Connection
If the issue is particular with the home phone, these articles may also help :
Should you need further assistance, feel free to send me a private message with your account details (Username/Customer ID together with the address on file).