To help you—and only you—get back into [one of my 2 unworking addresses], we need to verify that it's yours.  

The other one I don't remember what my password is because I so rarely logged into that account and just accessed it through my linked accounts. 

However the main problem is when it asks how I want to receive my security code for one of them the email address no longer exists, and the other two have one of the inaccessible addresses as my backup.  Each of my accounts is used for a different type of correspondence and for these ones I don't send emails out from them so when I go into the form and it asks for subjects of emails sent or email addresses to people you have recently sent emails to I can't answer them.

I have filled out the forms multiple times, for those two inaccessible accounts, but they always come back saying there isn't enough info to prove that it is my account.  I have a bunch of emails in those accounts that I need so I can't just not use the accounts.

These are the numbers for some of my attempts at filling out the forms: 94954300 and 94951765