Duplicate charges may be due to technical issues, payment gateway glitches, or multiple clicks from impatient users.

If customers experience duplicate charges, first verify the payment gateway settings for potential glitches. Slow page loads or unclear payment feedback can lead users to click the purchase button multiple times, resulting in duplicate charges. Ensure that each transaction is processed only once, and improve page load times to reduce the chances of multiple clicks. Regularly monitoring payment processes and resolving gateway issues can prevent duplicate charges, building customer trust.