Micro Soft are blocking my e-mails .

When I try to send an e-mail,  micro soft refuse to deliver it by saying there is unusual activity in my account and I must verify my e-mail and password ,for them to unblock   I do not have a phone and when I send in a request for them to unlock the account they send an e-mail saying they are dealing with it and to go to their site when I get there their is no help whatsoever. they just keep sending the same e-mail which I am not allowed to reply to and the whole process just starts again.