DHL ignores emails and calls

A package was sent to me from Germany and DHL was used as the courier in August 2017. The value of the item was disputed and after a while, I was so upset I just agreed to pay for the value SARS dictates it is (after I provide a bank statement to prove the amount I paid was much less.) It is now 29 November and after numerous emails and calls, I still have received nothing. Gugu Mngomezulu who is supposed to help me simply ignores my emails or reply saying not much. She almost never answers her calls and I have to hold on sometimes for 20 minutes or more. I contacted other people and although they say they will help me nothing came of it. It is so frustrating simply not being able to get this valuable item and it looks like there is simply nothing I can do about it.