IF you receive an account you will need to check that out with iTunes store.
Support - iTunes - Account & Billing You will normally get a receipt by eMail within 2 to 3 days and a reply within 24 hours.
IF they have no record of a purchase report it to your Credit Card security and ask for an explanation.
iTunes Store & Mac App Store: Seeing your purchase history and order numbers
Was it In-Apps again? If so, no one stole the money.