Are you adding or changing the credit card details or your account's name/address each time you purchase something ? If you are then you will probably receive a $1 temporary store holding charge to check that the card is valid and still active - the $1 should disappear within a few days : store holding charge.
Thanks for a quick reply,
No, i am not adding or changing any card details of my account, just entering my password when i purchase something. It happend to me more than 3 or 4 times. It appeared in my credit card statement as well. I am getting immediate SMS from my bank that 1$ has been credited. But my purchased price deducted sometimes 1 week after.
The 1$ credit doesnt disappear after some time. What should i do?. Somebody from apple can help.
You can contact iTunes support via this page (these are user-to-user forums, Apple don't read/post here) : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page, then Purchases, Billing & Redemption