A purchase by a stranger through my ID

If your question is regarding an email, see below.

• Apple would not warn of a pending account issue, giving you a deadline to fix the issue. 
• Apple does not include document, or PDF files to download.
• Apple would not refer to you as Dear Customer, Dear Client, or anything other than the name on file for your account.
• Apple would not have such horrible spelling or grammar. 
• Apple would not send a message to “Undisclosed Recipients”. 

It is a phishing attempt. Do not respond. Do not divulge any personal or financial information. You can use the address below to forward the suspect email message, as an attachment to Apple.

reportphishing@apple.com

The links below has information to help identify fraudulent emails.

Identifying legitimate emails from the iTunes Store

https://support.apple.com/en-us/HT204759

First of all, contact your bank and block your card, to prevent new purchases.

Then follow this article.

1. Sign in to your Apple ID account page. If you can't sign in or you receive a message that the account is locked when you try to sign in, try to reset or unlock your account.
2. Change your Apple ID password and choose a strong password.
3. Review all the personal and security information in your account. Update any information that isn't correct or that you don’t recognize, including:

• • Your name.
  • Your primary Apple ID email address.* If you need to change your email address, update the features and services that you use with Apple ID, so that each one is using your updated Apple ID.
  • All alternate email addresses, rescue email addresses, and phone numbers. 
  • Security questions and answers. If you think they might be easy to guess, you should change your security questions.
  • The devices that are associated with your Apple ID, if you've already set up two-factor authentication.

1. Check with your email address* provider to make sure that you control every email address associated with your Apple ID. If you don't control the email addresses associated with the Apple ID, you should change the password for the email address or use a different email address. 
2. Set up two-factor authentication for your Apple ID. This additional security feature is designed to prevent anyone from accessing your account, even if they know your password.

And don't forget to contact Apple Support.

Where are you seeing the purchase ? On your iTunes account's purchase history ? Phishing email ?