Please reset you password using the "Forgotten your Password" function.
Don't worry though:
Samsung does not store all your payment card information. After you have purchased a product from Samsung.com, the only information visible on your account (and to our customer service team) is:
- The date the order was placed
- The amount paid
- The last 4 digits of the card that you used
- The expiration date and the card type
- Name on the Card
This is the only information available, so this will not be able to be used by someone else for any unauthorised payments.