Appalling service from skynet

This is a classic case of bad service and bad attitude rolled in one! On completion of my registration with UNISA I was informed that I will be receiving my study material through skynet, this was on the 31st of July, from the parcel tracking system it shows that my material was returned due to a BAD ADDRESS!! I find this as utter nonsense as my company does a lot of business with Skynet, thus the excuse of a bad address is absurd!! On calling ***, I was informed that they have changed the address and the parcel will be shipped the next day... So I checked the next day (11/08/2015) I was informed that it would not be shipped... Really now!! its been over 3 weeks and I was not even called when the shipment was returned... I was not informed of any updates regarding my shipment... This is very terrible service and I am really un-impressed by this bad service.