JHB International Mail Centre - no response and poor service

My international parcel was posted on 29 December 2017 from Germany to South Africa. It is 2 months later and I still haven’t received it. Who can assist me to locate this parcel and deliver it? There is no answer at the JIMC call centre number provided to me by DHL ( ********** ). I have also sent multiple e-mails to ********** but haven't received any response. The online tracking tool shows that the parcel cleared customs on 28 January. It is 1 month later and the parcel is still at JIMC E. 1/22/2018 11:28 AM Held by customs JIMC E 1/28/2018 9:07 AM Arrival at delivery office JIMC E 1/28/2018 3:59 PM Departure from inward office of exchange JIMC E 2/4/2018 2:42 PM Departure from inward office of exchange JIMC E How much longer do I have to wait??