NO SERVICE NO ANSWER

I Have been trying to track my parcel from Australia for the last month. It has been at the JHB Hub centre from 10 December 2015. Shows handover item to delivery agent on 14 December and unsuccessful item delivery attempt on the 17th of December, then again on 24th of December. When I phone, the number just rings and then cuts off, nobody answers. I need to know why this parcel shows undelivered. If at my home, why did nobody call me, but as per my Post office Edleen at Kempton Gate, it should go to Germiston hub then to them.. I just need to know where my parcel is!!! <br>