Avoid! Late Delivery To Wrong Destination!

I submitted an important document on a Wednesday for Overnight Counter-To-Counter delivery, in asking the clerk when delivery could realistically be expected, I was told the next day, latest in two days' time. When calling customer service to track & trace the item I was told there were severe backlogs in the system and that the item was only likely to arrive after the weekend. The first delivery notification (for an overnight service) was only received after seven days! And guess what, it was for collection at the wrong post office! Their are many excellent and very efficient courier companies around - they compete very well on price and more importantly, they deliver on their promises...