Hi, we are wanting to swap over from VM but have no BT socket in property as was removed around 10 years ago during their installation. The wire comes from bt pole, runs down front wall and into window frame but is cut off. Will a contract have this installation included in the setup cost? Will we be able to port phone number from VM it was previously a bt number. And how do we manage the changeover as can't be without service. I can upload photos of wire if needed. Cheers.