Email account no longer exists

I'm trying to find out where is my email LIVE account (*** Email address is removed for privacy ***) that WAS connected to my main email LIVE account (*** Email address is removed for privacy ***)?    

I cannot find it in order to directly sign into it.

I have tried to submit a help ticket but the response was of no help.  I was told to re-submit the form to "Re-Cover your Microsoft Account" 

When I input the lost email account the form automatically defaults to an error message that states that that email account cannot be found.  

Well, duh!!!

When I put in an ALTERNATE name (*** Email address is removed for privacy ***) that was used for that lost email account, the form accepts it but then I receive an email from the Microsoft help desk stating that the info was insufficient for the AUTOMATED system to validate account ownership.  

More info was requested despite the fact that I supplied the form with the password, the birthday, and the last 4 of the credit card used.

Since this lost account was an under-used email account for future use, the info submitted is all the info I had.

Because I did not know this was going to happen, I have recently supplied this email addresses to business associates and I am expecting responses very soon. 

Thanks for any help you can give.

-LW