Locked Out Of Amazon Account

My Amazon.com seller account was suddenly locked on July 19, 2026 with a brief on-screen note saying “card not verified” but I did not receive any email or clear explanation about the reason or what I should do to resolve it. Because the account is locked, customers cannot properly access our seller account, and even if they somehow do, we have no way of seeing their activity or managing orders. This directly affects our business, causes loss of sales, and creates uncertainty for both us and our customers. I contacted Amazon customer service and spoke with first-line support, but they were not able to help me. When I asked to be transferred to a Tier 2 technical manager, the call was cut off, and I did not receive any callback or follow-up from Amazon. I request that my seller account be urgently unlocked and that I be clearly informed about any requirements or steps needed to verify the card or account, so that our business can resume normal operations without further loss.