So far I have got BT to blame Virgin and Virgin to blame BT.
After another thirty minutes on the blower to BT they gave me a date and a reference when they notified Virgin that they were taking over. Back to Virgin.
Their reason for billing me is that BT did not transfer using the MAC No facility. Apparantly they did not replace Virgin with their service but added it on as the default. To quote Virgin,
"We acted correctly by giving you a MAC No, you acted correctly by giving BT that number but BT acted incorrectly by not using it when they transfered the service."
I closed my service with Virgin but it will still be about six days before it ceases. Reading previous posts it is possible that BT assumed I was a cable customer and did not use the MAC No.
However a letter to a Mr Buckley, Customer Services Manager of BT is on its way as I am fed up of telephone calls. When I took on BT they stated that everything would be taken care of; it hasn't, so the ball is now in their court.
Watch this space.