To request a refund for a purchase that you paid using FreedomCoin, please contact the GunBroker.com seller directly and provide them with your FreedomCoin transaction ID.
Note: The refund can be made after the transaction shows complete in your BitRail wallet. Even though many transactions are processed the same day, some transactions can take 1-3 banking days depending on the banks involved.
Additional resource that is available for you is the Gunbroker.com Buyer's Protection Program:
https://support.gunbroker.com/hc/en-us/articles/224766967-Buyer-s-Protection-Program
You can reach Gunbroker.com Customer Service here: