As check with DHL, we can cancel shipment but cannot postpone the shipment. It means if it has something wrong with your shipment which has been already booked completely, we can do the cancelation only then book new shipment instead.
The new booking can be book by use the same “หมายเลขยืนยันการแจ้งรับ 6 หลัก” which we received from DHL system since the previous shipment (shipment ที่เพิ่ง cancel ไป) kha.
Please find process to cancel as below mail kha. And kindly note that please cancel the shipment before pick up date 1 day at least.
Tip During use the online booking website, you can leave your computer not more than 10 minute, otherwise the DHL system will disconnect and you need to start to fill all information again.