Hi @JohnC2. I've the same issue. Switched from TalkTalk to BT and landline now gets calls from outside/others but not from 3 mobile accounts. Grateful if you could help me get this sorted.
Sounds like the number not fully ported across to BT from talk talk. I will get a mod to jump on this post.
Welcome to the Community. I am sorry to hear about the problems you've had,
We can take a look into this for you. I'll send you a private message with some of the details that I need.