I've just cancelled my sky after years.
had the complete package, HD, plus multi-room
noticed they were charging me extra and one month had charged me £100 extra so called them.
They said its because I have multi-room and they are not connected to phone lines.
I pointed out the 12 month rule on phone lines, and they said it doesnt apply to multi-room, and that all boxes have to be connected to a phone line all of the time
Told them this was not practical, and that I wasn't prepared to pay it, and asked why they had taken £100 off me, and they said they forgot to take the extra the previous month, so they took double.
Cancelled it there and then, saved myself £90, plus the extra that they were taking for not being connected to a phone line, and got BT vision. £29.90 a month including sky sports 1 & 2 and ESPN