Having just taken a quick look at this thread, there seems to be some confusion here.
The geo number which can be called via QX Dial+ is clearly shown on its own webpage
here.
( Please note, however, that this is extremely inefficient use of your minutes.
You have to store 300 minutes, through 01635 774 320, to get just a paltry 30 points - which you will find won't give you much at all !
).
The link thunderman gave shows how you can store minutes from landline packages like BT Together, Talk Talk, and Sky Talk.
Please note however, that you can only transfer credit from one phone to another ( such as from your landline to your mobile ) if you open a
QX Dial+ PIN account,
NOT the ordinary one.
Details of these are only given to enquirers who contact QX Dial+ via email.
HTH.
mobaholic.