Update On :28 October 2014
Shortly after Apple Pay's Monday launch, some eager early users were unsettled to see duplicate charges on their accounts.
Apple Pay lets iPhone 6 or iPhone 6 Plus users store credit card information on their devices and then pay for products using tap-to-pay terminals in stores, or via apps when shopping online.
However, in some cases, it appears to be dinging consumers' accounts twice. Because one of Apple Pay's security features is that it keeps no transaction records, customers are finding themselves trying to convince their banks they are not responsible for duplicate charges without being able to produce any paperwork or backup data.
News Source From : http://www.ecommercetimes.com/story/Some-Apple-Pay-Users-Get-Double-Billing-and-Double-Talk-81237.html