Did not follow the Fakebook link, but, as somebody who deals with couriers on a daily basis, pretty every courier company has had off days, and there are some horror stories.
Best was the late unlamented Parcel Plus, where I coincidentally still have a wall clock they gave customers. They were a part of Spoornet, used to be known as SAR&H, and were the small parcel division, handling everything from 800g ( legal minimum limit, under 800g had to be sent via South Africal Post Office) up to 150kg. So, they were pretty good rates wise, and offered a low cost delivery option to door every place there was a rail siding and station in the country, though delivery might take a 2 week period for the smaller locations. However they did have a pretty good track and trace system, logging parcels at collection, and then you could track them via email all the way to delivery with a scanned POD back, no web, since this was the 1990's, and they had the staff to do the interface between the SAP system they ran and customers. So, send a parcel Monday 3PM, logged as collected. 5PM logged as delivered to depot. 6PM logged as not transferred to container and marked as stolen. Next morning email through that parcel was logged as missing, insurance claim paid into our account, delivery charge credited to account and a free waybill as apology. So Tuesday send again, and Wednesday the third. Third one generally got through. Insurance though paid out each time. It was actually profitable to send via them, and generally the customer got his delivery in the stated time as well, and we had free delivery on most parcels. No wonder they went bankrupt around 2 years after starting, making a massive loss every quarter, even large by the admittedly poor expectations of any state run enterprise.