Hi badger999,
Thank you for reaching out to us in our community and welcome back, we are sorry to hear your landline isn't working, I have had a look at things at our end using the details we have for you, everything looks as it should, no issues which could be causing this, can you try removing everything from the phone socket including any extension, filters, if possible can you try a standard phone, if the phone you are using has multiple handsets please do not use that?
Regards
Paul.