Well, using the number posted about (the 0845 one, not the 0800 one) I got through to a guy called Peter in broadband technical support, who gave me my details, so I've just upgraded online now, and it's flying. /me is very impressed
Just to say, as well, that although I've had reason to moan about the CS agents I've dealt with in the past, the person I spoke with tonight was extremely professional.
and a round of
to Peter