If you absolutely cannot find the subscription in your account and you are sure you don't have any other account, it's possible that your credit card/PayPalaccount has been compromised. This means unauthorized charges may have been made on someone else's Microsoft account using your payment method. In such a scenario, you should contact PayPal to open a dispute case. Microsoft is unable to directly investigate issues related to someone else's account if you contact their Billing Support directly. However, once a dispute case is initiated by PayPal Microsoft can then respond specifically to those claims through the dispute process with thePayPal. This is the appropriate channel to resolve such issues, as it ensures proper verification and handling of the unauthorized charges.