Though some sellers provide a courier reference number to their customers, the details of the item are not easily available on the website.
It appears that the items are actually received by the courier company some time after the reference number has been generated, as no information can be obtained from the courier website.
The courier company should specify or send an alert that the item has been despatched for delivery so that the recipient can arrange to be present then, as they may have a busy schedule or work elsewhere
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