Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Thank you.
How about trying using this:
Open https://support.microsoft.com/contactus
Type the "Chat with an agent" option and press Enter.
Please click on the "Contact support" button at the bottom.
Select the Product and Category for support according to your requirement.
The available support methods will be shown to you.
Please ensure to contact using business hours(Monday to Friday, 9 AM to 5 PM Local time) for maximum available support options, including Chat support. You can also select Call Me back option and input your Phone number.