@Anonymous User
It depends on how old the phoneline is. My memeory of having Now TV broadband despite having Sky a few months prioir I believe the just used the same phone socket.
Although that being said the Sky phone socket was recently installed.
You can always give the broadband team a call just to clarify. Because it might just be a matter of the engineer coming to activate the line.
https://help.nowtv.com/article/how-to-submit-a-broadband-complaint1
FRee from number on link above 0800....
FYI that I do not work for NOW, just a NOW customer trying to help