Parcel stuck at Witspos hub

Parcel number RC***ZA was sent out on the 22 April 2016 and landed to Witspos hub on the 27 April and got stuck till today. The destination is Westlake post office cape town. The service is pathetic, every number i have called there is no answer, the customer care No.: *** (just rings) The number for WitsPos (Hub) *** and *** Both just rings. I Been calling since the 28 April and no answer at all. I am so disappointed with this service as the parcel is a gift and my mothers birthday is long gone. If i had known that this is the type of service offered I would have opted for alternative shipping from reliable companies since post office is no longer a dedicated service provider that it used to be some years ago. I am so disappointed.