Problem with multi-factor authentication

Hello, I am a registered and active Microsoft Partner with ID 1822164. I have two-factor authentication through the Authenticator app on my mobile phone. The phone is currently down and I can't log into partner.microsoft.com. I have a new phone with Authenticator installed but I can't make any changes to the account. I can provide any necessary identification information, my name and password are valid. Where can I request to turn off two-factor authentication to sign in and add my new phone?