Amazon strictly enforces their gift card Terms & Conditions. Please note that if a customer redeems excessive amounts of Amazon gift cards in a short amount of time, or attempts shipping or purchasing from across country borders, Amazon may flag your account and lock your Amazon balance. Bitrefill has limited ability to assist when Amazon flags an account and is unable to request or provide refunds in these situations.
Amazon Balance and Amazon Gift Card Terms and Conditions
Amazon Gift Card Restrictions and Prohibited Activities