Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Dear Mary D 330,
Thanks for visiting Microsoft Community. I am happy to help you.
I've learned that you may have received a fraudulent invoice.
You log on to https://account.microsoft.com/ and look in Services & Subscriptions to see if your account is subscribed to a Microsoft product, if not, please be assured that there will be no erroneous chargebacks.
Thank you very much for promptly feeding back to us this important information about the possible fraud regarding Office 365. Your vigilance and the act of actively communicating with us are of great significance for us to safeguard the rights and interests of the vast number of users and maintain the security of the Microsoft product usage environment.
We attach great importance to the matter of the fraudulent invoice for the service you didn't subscribe to that you mentioned. We will immediately arrange for relevant teams to conduct in-depth investigations based on clues such as the invoice number, phone number, and address, and do our best to prevent more users from encountering such problems. Once again, we sincerely thank you for your trust and support. If you have any further discoveries or questions later, please feel free to contact us at any time.
You can check this support article to get more information:
Phishing and suspicious behavior in Outlook - Microsoft Support
Wish you a happy life!
Best regards
Miyeon.S - MSFT |Microsoft Community Support Specialist