URGENT: Created an alias, then changed primary alias and cannot access Hotmail AT ALL

Hi there, I created an alias for my Hotmail account with an Outlook domain extension. And then I changed the alias to be my primary email.

Then a week later I realised I just want to use my old address and occasionally use the alias.

I was fiddling around with it because when my alias WAS NOT my primary email, I could not access it when on the New Email screen

Now I cannot get into Outlook AT ALL.

People are calling me saying that they are getting a bounceback email when they try to use my primary email, please sort this out URGENTLY I use this account daily,

Anila