Hey there, Joe
If the subscription or the account is frozen, it would be better for you to reach out to support by submitting a support request. You can learn how to make a support request through this link: https://portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/newsupportrequest
If you can't reach out to support via the support request, please choose a phone number on this page for your region: https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
You can sign into your Azure portal here: https://portal.azure.com/
Then open the Azure cost management to view your subscriptions. It may detail why the subscription has been frozen. The account may have been frozen due to a payment problem or subscription problem.
Hope this helps,
Nathan