Can’t access my Microsoft account and now I can’t sign into to xbox live, HELP

Every time I sign into my email it always says it looks like someone may be using your account please verify its yours, I can't verify it's mine because its an old email and I can't remember my security question to reset my password or any information, I have also filled out the questionnaire numerous times but still no luck, for the past few months since this has happened I have still been able to sign into my Xbox live account because I have it on auto sign in but since Xbox brought in these security proofs I can no longer sign into my Xbox live, I have rang xbox 3 times and they are no help so basically I'm locked out my Xbox live account and all my achievements and things I've bought have gone to waste and its annoyed me so much, I still know my email and password and it signs in it just asks me to verify it but I can't, there must be some way of getting back into my Xbox live or sorting my email out?!