Can't sign up for Xbox Game Pass Ultimate

[nonny]

I'd completely forgotten I had 6 months free Game Pass Ultimate with my fibre broadband.

I've gone into MyBT to select it and add now but all it does is throw an error: 

"We're sorry the system is down for maintenance, you can submit your activation request by calling us on 0330 1234 150 choose option 1 and then option 2."

Calling the number just seems to take me somewhere to raise a fault and I can't see any way to sign up? 

How do I actually sign up? 

[JohnC2]

Hi @nonny, welcome to the forum and sorry you're having trouble claiming your Game Pass.

Message us Broadband | BT Help and one of guides will be happy to claim the Game Pass for you.

Cheers

John