LATE DELIVERY OF PARCEL

I ordered a parcel online. The order was billed and processed on 11/08/2015 and it was dispatched. I tracked the parcel online (1Z***) and on 12/08/2015 I phoned UPS JHB to check and was asked to confirm my address and was told that the parcel would be delivered by 17/08/2015 which also corresponded with the date on the website. On the 17/08/2015 I called once more and was asked again to confirm my address and was told that the delivery would be 18/08/2015. When I called on the 18/08/2015 to check I was asked NOW FOR THE THIRD TIME to confirm my address and number and was told that the guy I spoke to previously had not captured my details and I was now told that the parcel would be delivered on 20/08/2015! It seems as if I constantly need to phone and checkup otherwise my parcel will not be delivered, seeing as it is already late. I truly find the service appalling and was expecting better from such a well-sorted company. Truly and utterly disappointing to say the least!