Incompetant

I had a parcel posted to me from the United Kingdom on the 26/09/2017 ,courier company from the United Kingdom said it arrived in South Africa a week after the sender posted the parcel. Ever since the parcel entered South Africa,South African Postal Service keep saying it has not arrived in the country. I have been phoning every single day without fail for the past three weeks(aside from waiting 40mins to an hour at a time for my calls to be answered) I get the same response each day telling me "parcel not yet in the country". There is no superior at the South African Postal Service for me to escalate the matter. I am very angry and disappointed at the the service received from South African Postal Service.