[calmpitbull]

It sounds to me that BT illegally used the virgin wiring and socket to provide their service over inside the house. BT should have provided separate internal wiring and socket so you should have had 2 sockets next to each other (one sky/bt and one VM).

VM could not know that their line was disconnected outside the house unless you tell them, as BT openreach used their wiring then you wouldn't have clicked on so as far as VM was concerned their was no problem.

If this is the case then a complaint should be made to SKY (your service provider for the phone) who should then take this up with openreach as their engineer should have done the install properly rather than just nicking VM's internal wiring and socket for a quicker job.