No Response from Call center

Hi There,<br> <br> I have been trying to track my parcel RZ***GB. First of all I cant track the parcel. Updates made are delayed by 4 - 5 days. The address given is my workplace where there is no chance that no-one is available for collection. But the status says \Failed Delivery\". <br> <br> The worst is that I am unable to find out what went wrong and what am I supposed to do next. The call center NEVER answers the call. Always puts me on Queue, makes me wonder if the call center is really operating. I have no clue about when and where can I go and collect my parcel myself, never mind being delivered. This is my first ever experience with SA Post Office and it is shockingly horrifying.<br> "