Help system process
Since I have been with you over 20 years as a UK user, I can safely say you need to address a Help system which will not restore a suddenly inaccessible account using your automated 'do this, now do that....oops still we can't sign you in' approach.
It would have taken less screen time to have called as we used to be able to, even with the extraordinary wait entailed - but this is just ineffective cost saving on your part.
Restoring a client email address is surely a fundamental part of an email service, is it not? Needless to say, I cannot put the email address affacted in the box below, because I will not see any response.