If you wish to remove the credit card information stored you need to do the following:
- Log into your cam4.com account.
- Click the small cog wheel in the top right of the screen
- Choose My Account
- Choose Payments & Subscriptions in the left hand menu
- Turn “Enable One-Step Checkouts For Easier Purchases” to off
This will require you to enter your payment information each time you make a purchase.
You can re-enable the one-click option by following the above steps and checking the box "enable one-click".