if you think you can get a better deal from them, phone the sales department and ask.
i told them i was thinking of downgrading my broadband (2mb) to the 1mb service so i'd stilll have the same speed as i have now when they upgrade and save myself a fiver they offered my free evening and weekend calls nationwide instead of the local one i had, they also said there would be no connection charge and they also gave me a £5 discount for 12months on my total package to boot