Package stuck at JHB sorting center/can't get a domestic tracking number

I ordered a package from the US which, according to USPS tracking, departed JHB sorting center/airport on 01/10/2020 (10th October). No further information has come through and there is no sign of my package. SAPS website is down, phone lines lead nowhere and customer service emails are being completely ignored. Without a domestic tracking number I cannot tell where the package is (if it has even left Johannesburg, coming to Cape Town) and I cannot acquire one without the help of SAPS. My international tracking number is UA***US. I would appreciate any help.