This sounds more like they are having issues getting permission to build an MSAN. This is a separate cabinet that handles telephony for cable users. If there's an existing one it may be full.
It'll be phased out in the not too distant, mind you, as voice over cable becomes a thing.
That or someone has things completely wrong here. There is no need to deploy more duct, if they can get cable to you they should be able to get copper to you as it's attached to the same cable.
I suppose there's a possibility that they have no duct between you and the existing MSAN either.
I've had a previous screw up where they considered my address part serviceable, this was due to my living in a 'business' area and their not having reliable records, though that was for really old network.