Late Parcel and Lack of communication

I was supposed to receive my international parcel on the 21st of November, it is now the 29th of November and I am still waiting , my parcel has been in the country for weeks now and is stuck at customs for some or other reason, I've seen emails , I've tried to call their customer care line @ the Joburg Hub but not a single one of my calls were answered, I even went as far as to call the head office but even they don't pick up their telephones. What is taking so long with my parcel I've been waiting and cannot continue waiting especially if there is no communication from the post office, this has been the worst experience of the year hands down.