Parcel Stuck at JHB INT MAIL CENTRE (HUB)

<p>I've been waiting for a parcel from the US for over a month now. When Tracking the parcel the last scan indicates "From Customs" but that has been like that for more than two weeks. There is another line indicating "Detension Notice" to which I forwarded a invoice as proof of purchase. I have yet not received any feedback, any response or any notification as to where the parcel is or what is happening. I sent mail, but no one replies. I've tried phoning countless times on end for the past three days but not once did I get through. Please assist as I need to be able to speak to someone to atleast get some type of clarity on what is happening. Where can I go from here? This is utterly useless customer service for the South African Post Office.</p>