To address the unknown charge on your credit card for "VS MICROSOFT (21,300 JPY)", it's important to verify whether this charge is indeed linked to your Microsoft account. Here are some steps you can take:
- Check Your Purchase History: Log into your Microsoft account and review your purchase history to ensure there are no overlooked transactions.
- Contact Support: Since you mentioned that you have canceled all subscriptions and did not make this purchase, it would be best to contact Microsoft support directly for assistance. They can investigate the charge and confirm if it is associated with your account.
- Bank Inquiry: Additionally, consider reaching out to your bank or credit card provider to dispute the charge if you believe it is unauthorized. They may have more information regarding the transaction.
Unfortunately, I cannot investigate the charge directly, but following these steps should help clarify the situation.