I am filing this formal complaint regarding the unauthorized and severely delayed cancellation of my confirmed and paid order (ID: NAEHA0059739474). I placed this order on October 22, 2025, with an expected delivery date of November 3, 2025. Despite the order being confirmed for over two weeks, the platform/seller failed to meet the delivery timeline. The eventual cancellation was executed even later, on November 8, 2025, at 11:31 PM. This last-minute cancellation, six days after the promised delivery date, constitutes a significant breach of contract and an unacceptable failure of service. Critical Consequence and Mental Pressure The items in this order were urgently required for my child's performance. The seller's failure to deliver by November 3rd, followed by this abrupt cancellation on November 8th, has resulted in a direct, tangible loss: my child is now unable to perform as planned. This entire sequence of events—the delay, the failure to inform, and the eleventh-hour cancellation—has caused me considerable mental pressure, stress, and inconvenience. I am now forced to scramble and personally source these critical items immediately, imposing an undue burden on me due to the platform's negligence.