Another major Apple product launch, another problem blowing up on the twittersphere.
The glitch has only affected people who have registered Bank of America cards to their Apple Pay accounts, with the bank promising to refund double charges.
Spokesperson Tara Burke said: "We apologize for this inconvenience and are correcting this issue immediately. All duplicates will be refunded."
An Apple statement read: "We're aware of a Bank of America issue impacting a very small number of Apple Pay users.
"They're working on a fix that will be available shortly and reversing any duplicate transactions."
The problem was first reported by CNN tech reporter Samuel Burke, who discovered he himself was being double charged for Apple pay purchases.
A cursory glance at Twitter revealed he wasn't the only one.
— Rohan Thompson (@blueharv) October 21, 2014
A Twitter account under the name 'victor' said: "Just use apple pay with Bank of America got charge twice 75 cent product got charge 1.75 #ApplePay" (sic)
Apple Pay, released as part of iOS 8.1 earlier this week, allows iPhone 6 and 6 Plus users in the US to pay for products in or out of store using just their device, where they'll have stored credit or debit card details.
The new feature has major retail and banking partners, prompting many to believe it represents the breakthrough of mobile payment technology.
Just how Apple will fix the problem is not yet known; it could be a new software update to the iOS 8.1 or a hotfix.