Ship living goods by post and some fraction will go astray — that is the trade. A box is misrouted, left on a step, signed for by nobody, or simply swallowed by a carrier's network for four days until the plant inside is beyond saving. None of that is unusual. What separates a nursery that absorbs it calmly from one that bleeds refunds is not a lower loss rate. It is knowing exactly what happened to each consignment.
The gap opens at the handover. The moment a parcel leaves your packing bench it becomes someone else's responsibility — but only if you can show it was handed over, to whom, and in what condition. If your record stops at "dispatched," you have handed away the goods and the accountability with them. When the customer emails four days later, all you have is their word against a carrier who has no reason to look hard.
Closing that gap means keeping a record precise enough that a missing order becomes a lookup: this delivery, these parcels, this carrier, this status.