Forum is a public place and it is NOT recommended to share and ask such question here as it is available to public and also it might take some time to get response and not all response come from Microsoft support and they also could not share private matters. It is better to contact Microsoft Support, have a look at: https://support.microsoft.com/en-us/contactus
Support request for suspicious activity on my Microsoft account (Abusive billing: 155,599.37 USD)
Dear Microsoft Support, I am writing to request assistance with my Microsoft account. Recently, I noticed suspicious activity on my account, including the creation of several resource groups that I did not initiate. I received a bill for $155,599.37, which is unusual for my typical usage. When I checked my account, I discovered that around ten resource groups had been created without my consent. I immediately deleted these groups, but new groups were created shortly after. I am concerned that my account may have been compromised and used for unauthorized purposes. I would greatly appreciate your help in investigating this matter. I want to understand how these resource groups were created and how I can secure my account to avoid incidents like this in the future. Thank you in advance for your help and I look forward to your response. Sincerely, Jessy MIHINDOU <Photos Removed for Privacy>