Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi ,
I'm Dyari. Thanks for reaching out.
You can check Services & subscriptions in your personal Microsoft account first to see whether Microsoft 365 shows a past-due payment or billing problem.
https://account.microsoft.com/services
Please note that personal and work Microsoft 365 accounts normally have separate subscriptions and payment methods, so your law firm's subscription should not automatically be charged through your personal account.
If you need to contact Microsoft Support, go to:
https://support.microsoft.com/en-us
Select the product > Get Home Support > Type billing > Sign in to Contact Support > Select the product and then click Chat with support agent in web browser.