Hi Steven,
1) I have received no answers in regards to why I have been charged for a service before it was activated. I've also filed a complaint about it and haven't received any reply.
2) An engineer finally came today, but unfortunately couldn't install the TV box due to "internal wiring being not compatible with Virgin". So he took the TV box and cables back.
I've added the TV service on top of my broadband service and committed to an 18-month period - so I am not sure what I need to do at this point.