Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Follow these steps to identify the purchase;
https://support.microsoft.com/account-billing/how-to-investigate-a-billing-charge-from-microsoft-398c5328-364c-d5e4-ea8f-f5ad60562a93
If you find the transaction in your orders, you can check your eligibility for a refund at this link;
https://support.microsoft.com/account-billing/how-to-get-a-refund-on-a-microsoft-subscription-67dca30b-b323-44d5-acc2-e02f9902c472
Since this is a community forum, we don't have access to account data or information. You can contact Microsoft support so they can help you with this charge.
On your computer, click the Start menu and type Get Help.
Type "Billing" as the keyword.
On the next page, you can click the "Contact Support" button.
Then fill out a few more details, after which you will be transferred to speak with an agent.