AZURE: We lost our azure global administrator account, now we cannot open a support ticket or see invoices

Hi all,

We lost our global administrator account(forget the email, and no one we can turn to in our organization).
We are trying to get the invoices in our account, but since we lost the global admin account, this account does not have permission to do anything. We cannot even open a support ticket.

Where can we contact azure support that does not require going through their portal. Or is there any other way to recover out global administrator account.

Thank you,