Invoices and proof that parcel is a gift have been sent - no response. need the package urgently

What a grueling experience for something so simple. I would just like an update on my parcel RU***GB. I was given a customs charge (74% of the cost of the parcel) which is incorrect and I will not pay it, this was sent to me as a gift and my understanding of the limits and conditions set aside by SARS is that when a gift is less than R1400 then duties and taxes are not paid, and mine is below that threshold. I have sent through invoices and have not received an update. When I call, calls are not answered. Please can I just would like to collect my parcel I have been waiting since October for it and need it urgently.

I have tried to be patient but then nothing will ever move forward. Even for the Lyttelton post office to find my package, I was give the run around for months.