Worst service ever

I hope this reaches a manager. Cant believe the pathetic service one receives after being a customer with them for 7 years. Firstly i book a parcel overnight to reach my customer asap as they are stick on the road with their vehicle broken down. Then someone informed my customer that it will take exactly the same time to deliver as road freight that forced us to change the booking to express delivery. At this stage the parcel was misplaced at JHB depot and nowhere to be found. The parcel remained lost for another 2 days and only answer they can give is that they are busy investigating. Eventually the parcel popped up in east London on the day it was originally supposed to be delivered in kzn and from there it seems the parcel disappeared again leaving my customer stranded in the middle of nowhere with nobody at the JHB branch that could care less how the parcel will get to my customer, the costs involved due to the negligence of incompatancy and how my customer will reach their destination before easter weakend with a parcel missing and only feedback remains that they are investigating.