I will have an appointment for DSL installation, however the phone number in "Meine O2" is wrong, and I cannot change this. I have logged in to Meine O2 and selected "Manage Login", then main phone number, but this does not allow me to change the phone number or add a new phone number. I need to change this number soon so the technician can contact me in the following weeks.
Edit by MXP_Alex: Moved to English o2 Community.
