Very bad service from SAPO

I have an incoming international parcel (tracking #UA***US) that was shipped on 13/06/2021 already. It was erroneously send to Wits Mail Center instead of Germiston and is now there since 15/11/2021 with absolutely no movement!! Customer services' (when they finally answered an e-mail after NUMEROUS unsuccessful requests to get hold of them via e-mail or phone) response was that they can't track it (even though I can, so really don't understand that comment). Meyersdal Post Office (which is very helpful and supportive) submitted a query on my behalf as to why the parcel is at Wits, to find it and for it to be returned from Wits Mail Center to Germiston, whilst I also submitted the formal query on missing or damage parcel / claim form - neither of us heard ANYTHING back / absolutely no response to date!!!! Really very poor service for something that should not be difficult to resolve. Very quick to take expensive shipping money though