That billing is a known scam. Your credit card has been compromised.
toughnickel.com/scams-fraud/Apple-iTunes-866-***-7753-Scam
To stop it, you need to call your credit card company. Have them cancel your current card and issue you a new one.
That is also not Apple's iTunes phone number. Apple has a few numbers that end in 7753, but not that one.
Apple Online Store
Apple.com is a convenient place to purchase Apple products and accessories from Apple and other manufacturers. You can buy online or call (800) MY–APPLE (800–692–7753).
Corporate and Government Sales:
Apple Enterprise Sales (877) 412–7753
How to Buy for Education
If you are a student or teacher, visit the Apple Store for Education or call 1–800–692–7753.
[Edited by Moderator]