I know I once had access to this account because I have emails I sent to myself from it, but though it was my intention to use it I never got round to the switch, I would no like to do so and I keep having to fill in password recovery forms which then tell me I have not entered enough information.

The account was the recovery email for my current current account as well.

I have phoned Microsoft and there is no official support, please can someone help me with this?

The latest password recovery form I filled in had the reference - 94830760