There are two possible reasons you received multiple charges from our side.
You have memberships with more than one email address. Our memberships can only be associated with one email address. If you create a new membership rather than updating the email address on your existing account then you will create a new membership and a new charge.
If you have two, separate memberships then you should contact us so we can locate all of your accounts and help you to resolve the issue.
You added an Ecards or Printables account on the same email address. We offer three kinds of memberships: Ecards, Printables, and bundle memberships. If you join with an Ecards or Printables membership and add the other type of membership at a later date then you will be charged for each account separately.
If you contact us directly then we can adjust your membership into a bundle. A bundle membership is only one charge a year for both Ecards and Printables.