Hi there @mia7
Thank you so much for your post and welcome back to the community forums.
I am so sorry to hear that you are experiencing this issue with your landline, I do think it would be best for us to arrange for an engineer to come and take a look.
I will pop you a PM across now so we can arrange this, please keep an eye out for the purple envelope in the top right corner of your screen alerting you to a new message.