iTunes billing
Why is iTunes taking money from my account
Question marked as
We are fellow users, we won't know.
If you've looked at the purchase histories of all iTunes accounts you have linked to the card and not found it (and checked iCloud storage upgrades) : See your purchase history in the App Store or iTunes Store - Apple Support
and if it's not : About payment card authorization holds from the App Store or iTunes Store - Apple Support
contact the card issuer