i purched 3 time but i don't receive any think what should i do ? 100$

You purchased what 3 times ? If an IAP then does the app that you bought them in have an IAP download option ? If not then try the 'report a problem' page to contact iTunes Support : http://reportaproblem.apple.com

Or you can try contacting iTunes Support via this page : 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