courier company that DOESNT deliver

I have an urgent parcel from UNISA that was to be delivered by SKYNET. Unisa failed to update my address and this resulted in the parcel being sent to a previous address. The parcel was sent from Johannes burg to port Elizabeth the 25 JUNE. on the 1st of July the delivery guy phoned me and I gave him the correct details as to where this package was supposed to be delivered. Then I phoned the port Elizabeth branch on the 3rd, 4th and 7th July to follow up, the parcel was only sent back to Isando on the 8th of July where it has been up until today!!! After speaking to at least a dozen of different people from the 9th the parcel is yet to be sent to the correct address in Rustenburg and I have been given the run around for weeks now!!! 13th Ive spoken to thandeka who promised that the parcel would be sent to Rustenburg and be out for delivery on the 14th but when I phone AGAIN today the parcel is still in JOHANNESBURG!!! this is the worst courier company I have ever dealt with!