PostNOT SA

Someone posted a parcel on Saturday morning on 25 May 2019, today being the 29th May 2019 and still no parcel. One branch is blaming the other and in itself being pathetic. If the destination is indicated on waybill as "A" how does someone at shop "E" see that its for "A" and still sign for it. Its now the second day since i have pointed out to that they made a mistake... now on day 5 they tell me that they would make sure i get it on day six... this is for a paid for overnight service...just one empty promise after the next.