My parcel is stuck at DURMAIL

My boyfriend sent me a Air Priority parcel for Christmas from Norway. It arrived in South Africa on 18 December 2020 and made a quick clearance through Customs and left Joburg on 22 December 2020. It took 17 days before it showed up at DURMAIL in Durban. It has now been sitting at DURMAIL since 8 January 2021. I have phoned Customer Services to see what is happening because the international tracking number does not work on the SA Post Office website or the app. This is because according to Customer Services the tracking services have not been updated to accept the international tracking numbers and a local number is no longer allocated. Customer Services could not provide me any information other than that the parcel is at DURMAIL. So I looked up the phone numbers for DURMAIL and got two. *** just rings and rings with no answer and *** says that the number is not available without even ringing. This is such poor service all round from the SA Post Office. I sit here wondering when my parcel will arrive. Is there a two to three week waiting period before any actions are taken on postal items because that is where it seems to be heading? This is so frustrating! No wonder most people use courier services these days!