Unused credits on a first bundle are refundable within 14 days, no questions. After that, bundle credits do not expire. If the law where you live gives you more rights, those apply.
To ask for a refund, select the chat button in the bottom-right corner of the dashboard, or email [email protected]. Give the date and the amount of the charge, and the workspace name. A person on the team handles every refund request.
When a refund goes through, RichAPI removes credits from the balance in proportion to the refunded amount. The Transaction History table on the Plans & Billing page shows the removal as a row with a negative credit count.