Skynet doesnt know where my package is

A package was sent to me from Unisa, Pretoria but the delivery person was unable to reach me. So the package was apparently sent back to the sender (Unisa, Pretoria) on 22 April 2015. It has now been 4 months and Unisa has not received my package. I have phone the Pretoria, Joburg and Cape Town Skynet branch continuosly. Cape Town office of Skynet assures me the package is at the Pretoria office and the Pretoria office ensures me even more that the package is in Cape Town. Everyone is passing the buck and I am still waiting for my package. This is horrible customer service! No one is willing to make an effort and assist in locating my package.