my contract runs out on the 23rd oct 2014 but i could ring up from the 23rd september 2014 for a free upgrade. i rang and set this all up yesterday and it was explained my first bill was going to be a lot higher. ive gone online and looked at recent charges and it says ive got a £125.00 upgrade bill credit on my next bill - what is this? surely i shouldnt be getting charged for anything and it should just run straight from one contract into the other? please help.
