Landline not working but internet ok

[victoriamews]

My landline has not been working for two days now. I have unplugged everything and restarted it. I have put a new phone but nothing seems to work so it has something to do with the line not the phone. My broadband is working and no lights on my route have shown there is an issue. 

please can somebody let me know what to do as I have a 80 year old mother living with me and this is the only way I can contact her when at work. 

[Mark39]

Do you have internet calls, where your phone plugs into your broadband Hub? Do you have full fibre broadband with an ONT box on the wall inside your home?