Lost Parcel

I really don't know how to react at this point because quite clearly, this is normal service from the post office. A parcel was sent to me on the 24th of March and I still haven't received it. I've called the Post Office Call centre (get told conflicting information), written numerous emails and I still don't know where my parcel is. The tracking number is PE***za. I'm really sad as the items were for a sick baby who was in desperate need for them. Tracking online says it is still at witspos, whereas when I call the post office call centre, they say it has reached its destination hub. I feel really stupid at this point as this is really poor service. It's very sad when people don't take you seriously like the post office!! please find my parcel, and if it is lost, please tell me so I can leave it. I've learnt my lesson and will never use the post office again