Changing contract phone number?

[Anonymous]

Hi there,

I would like to change my current contract phone number to a different one.... can anyone tell me how to do this?

[Anonymous]

Call Customer Service and ask them for a number change.  They'll ask why (nuisance/sales calls) and if you haven't had a number change in the last 12 months they'll do it for free, if not they may charge (£35) depending on justification for the change.

The change goes through almost straight away.