Bad Service and *****ing Money

I am waiting for a incoming parcel from Australia AWB ********** 295, i received an invoice about 24 hrs after the parcel was sent from Australia from a certain Mbali Mbatha Wednesday 13/6/2015 at 7:28pm. The invoice showed an amount of R4880. The contents of the parcel which contained cricket ***** is NOT liable for any duties, only for VAT. the total invoice amount is 816 AUD. Approximately R8200.00. Please explain to me how do you get to the amount of R4880.00. After this i tried calling Mbali on the number on her email signature. A Lady called Lungi Dlamini Answered and told me Mbali wasnt available and that i should forward my request and documents to her. I did this and also received a reply from Lungi that the message was received and the document submitted or recapturing. After 24hrs i still have had no reply. When calling again, Lungi was not available and i had to work with another person. It seems to me that i have been way overcharged, i would just like to know how many other people are getting overcharged like this? Is this where DHL is making all their money? I wouldnt hope so as they have a great reputation. I please need answers as this package is of cardinal importance.