Our colleagues in the Logistics team would typically alert the CS reps of any parcels left uncollected. These customers are then contacted by the team in order to iron out any issues. However, failure to do so may result in the order being sent back :(.
Here, several options are available should the need arise:
1) You may let us know if you'd still like to reschedule a delivery. We'll do what we can to send the covers to you if you still want it. Note that the shipping fees for a re-delivery is borne by the customer. Customers may always get in touch with us for assistance.
2) Unfortunately, if we do not hear from the customer the item would then have to be destroyed. We try to avoid reaching that stage as best we can!
You may also read the following for more information:
Hope this helps!