Changing too a new package

I'm currently on the old premier package with the following

Vivid 200
TV extra large
Talk evenings and weekends
An extra v+ hd box

Can I negotiate a new deal on the big kahuna bundle with everything the same but loosing the extra box and evening and weekend calls as I dont use the phone for calling out anymore I yhink im paying over the odds

Paying about £96 a month

And how much would it cost I know I wouldn't get new customer deal