Sending, receiving, and organizing email in Outlook.com
Update: I managed to find the chat page - VERY difficult! - and chatted with a real person who has assured me they are liaising with the account recovery team to help me get into my account. I had to complete the account recovery form again for the millionth time, and got the same automated response saying I hadn't provided enough info to prove my ownership of the account, but the support person I was chatting with said I could ignore that. I have a case number and am awaiting the arrival of an SIR number, and then supposedly someone from account recovery will contact me. I live in hope...