how do I change the credit card on file?

How do I change the credit card on file. I did not save email link from last bill. I would like to update asap

Hello Tomhunt88,

Upon checking your account, I found that you have signed up for a new subscription earlier today using your credit card number **6480.

It seems you tried to change your credit card number in bluesnap but because of a technical glitch it actually charged your card for a new subscription with order #INT141020-7830-81559.

I have cancelled your bluesnap subscription and processed the refund for order #82018284. Please allow 3-7 days for the amount to reflect in your account.

Please bookmark the following URL for your reference in case you need to change the credit card details again:  https://sites.fastspring.com/interlogy/order/s/INT141020-7830-89568S 

Thank you!