I’ve recently ordered a new landline contract and it’s going to be activated on February. In the status of the order it says that I won’t need a technician for the installation, but just in case, I’ve noticed that my current contact (mobile) phone number it’s wrong and I can’t change it, so should I need to be contacted it would be impossible. The problem may be that I’ve tried to use an italian mobile number, but that’s the only phone number I have right now.
How can I change it?