Hi Leevans,
Welcome to the community and thank you for posting.
We are very sorry to hear you have been experiencing issues with your landline service.
On checking things from our side, we can see that there is a known issue impacting the landline service in your area.
This has been logged and the team are working to get it resolved. The current estimated fix time for this is the 30th January 12:20pm.
We apologise for any inconvenience caused and appreciate your patience.
Thanks,
Nat