Want to know who used my card

I would recommend putting a passcode on purchases, that will require interaction from you when a purchase is requested, verifying that it's
ok with you, and they wouldn't know the pin to purchase without authorization.

Hello no way at all for you to really track who used the card. I will just show date and item on billing statement. Wont even show what account it went to. I would remove card from account and have child spending lock on.

https://support.xbox.com/en-US/xbox-one/security/approve-child-purchases

Hi there BETSYLAMANGE

You can check both there purchase history on the microsoft account and to stop it happening again I suggest trying the Pass key option to help stopping unauthorized purchases https://support.xbox.com/en-US/my-account/security/create-xbox-one-passkey Hope
this helps

If you log into there Microsoft account, click the account in the top right and click "My Microsoft Account." You will be able to view billing information that way.

Do you have access to their accounts or are you just providing the credit card to keep on file for billing? If you had access to the accounts, you could look to see who made the purchases. Here is the

link for help looking up account purchase history.

Hope this helps!