Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Do you still need help with this?
If you have a consumer (home use) product, the first contact with Microsoft support is always the chat at https://support.microsoft.com/contactus . At a later stage, you may be able to get a callback.
Alternatively, you can ask your specific question here in Q&A. One of us, your fellow users, may be able to assist.