Been having this same problem the last couple of days. Bought new phones and problem still persists. People phoning my house says it rings on their end but nothing at this end, also it sounds like my line is open and i can hear what is going on in the room the phone is in.
Welcome to the Community, I'm very sorry to learn about the problems you're experiencing with your phone line recently.
I've been able to locate your account to run some tests on the line from our end, we're detecting some errors with the line and I'd like to arrange for an engineer to come and take a closer look if you're available?
I've sent you information regarding this in a private message, which you can view by clicking the envelope on the top right of this page.