Payment deduction from credit card

See your purchase history for the App Store or iTunes Store - Apple Support will help you determine authorized purchases.

"If you see purchases that you don't recognize or unexpected charges

• If you see items in your purchase history that you don't remember buying, check if someone else who uses your device, such as a family member, bought the item. If someone else is using your Apple ID and password, change your Apple ID password.
• If you don't recognize a charge on your statement from your bank or financial institution, try these steps.
• If you still need help, contact Apple Support."

chanuka161 wrote:

but this payment has happen with out my prior authorization?? How do I get this refund ??

In that case there is nothing that Apple can do since it is an "unauthorized" charge to your bank account. Dispute the charge with your bank.