SA Post Office Customs - Steels Good Out Parcel

I was send a parcel on the 5th May 2015 from Mandurah Australia by air mail to Hatfield Pretoria SA, it left Australia the same day it was send but somehow it vanished along the way. <br> <br> After many mails and telephone calls (if they pick up the phone which almost never happens or responded to the mails) from me and my aunt about the missing parcel the SA Post Office &amp