Parcel being sent from one Post Office to another.

I ordered a parcel international. it has been in the country since 31 August 2019. on the 17th of September the parcel was in Port Elizabeth. on the 19th of Septmeber it was in Tshwane mail Hub. Today, I called the Post Office and am told that the parcel is back in Johannesburg International. The parcel was supposed to go to Pretoria Church Square Post office. i have been calling the Johannesburg International mail Hub since 08:00 this morning and guess what. No answer. So, i am now not going to renew my Post Box. I am so frustrated with the service that Post Office is giving me.