Hello Giovana Rodriguez,
Welcome to Microsoft Q&A forum.
Having a charge on your card might not only come from your account or someone in your household. If there are any relatives or acquaintances that used your card before to buy the subscription on their account, the recurring billing could also charge your card if it is not changed. Before proceeding further, please check on that possibility first.
Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas. In this case, if you cannot figure out where the charge might come from, please contact Microsoft Support.
- Visit this website: Contact - Microsoft Support
- Type Contact in the search box.
- Now click Get help, and Select Contact Support or Sign in to contact support below.
- Go to the Products and services tab, and choose either Microsoft 365 and Office category.
- On the Category tab, choose Technical support.
- Go to Confirm.
- You can now choose the option of Chat with a support agent on your web browser.
Thank you for your understanding.