Hello Kristin, and thank you for posting to our community.
Upon closure of your account, an automatic e-mail will be immediately sent to Endicia to close down your active Endicia accounts and initiate the refund of any remaining postage. Note, Endicia may require 2-3 weeks to refund postage balances.
This information is also detailed here: How to: Cancel my ShippingEasy account
If you do not receive your refunded balance after 2-3 weeks, we would recommend reaching out to Endicia directly using their contact information listed in the link below.