Bugger Microsoft!!!!!

I had a message come up on my email sign in screen from Microsoft about security. It concerned an old email address I had that was through Bigpond. I haven't used it for years and had forgotten about it.



I thought I did what they said a in order to protect the security of my account with MS.



I followed all the steps and now I have no access to any email account and have managed to do the same to the wife's account.



HOW can I get in touch with MICROSOFT by phone??