Engaged tone on landline

[Jaymac29]

I am getting an engaged tone when I'm trying to make a call from the landline and people are trying to call me but they are also getting the engaged tone any ideas?

[Lisa-P1987]

Hi there, I’ve escalated your post to our Community Messaging team who will invite you to a private chat shortly and help you with this. 

Just look out for the colourful bubble to start the conversation.

Here's more information on how Community Messaging works - https://helpforum.sky.com/t5/Did-you-know/Escalating-a-post-to-a-Sky-expert/ba-p/3711147