Hi Paulina,
The landline isn't connected, I don't have a telephone to try. The landline service isn't flagged as 'Activated' because I have a broadband only plan, however the telephone line is physically connected to my flat and to the router as well.
No telephone number on my bills or my account's web area, I've checked every page and every possible attachment.
Can you please help me find it? Can I use my account number and area code somewhere? I don't understand why this info is treated as a top secret one..