Not satisfied

Why must postnet first go to Sandton Joburg, with a parcel before they go to Potchefstroom i have yesterday send a parcel to Potchefstroom from Kuruman, Kuruman and pothc are about 450 km from each other, and if you calculate how far is Sandton from Kuruman does it not make sens at all while take package good been delivered in a days time.