Bad experience

Bad experience from Fastway couriers. We are waiting for a parcel 2G***. FIrst it went to Kimberley, then Upington and now it is in Welkom. Which part of a postal code for Groot Brak of 6525 do you not understand? So now it is going to be how long and we do not know where our parcel is? And Fastway do not answer thei phones??