Pathetic service

My brother sent me a parcel from New Zealand on the 29yh November. There was a miscommunication and the lady assisting my brother put down that the parcel was valued at $400 instead of $40 for each item (there are 2). I spoke to Kholofelo on the Wednesday the 7th of December and she copied me into a mail requesting an invoice which I sent and also told her she can get the sars officials to open the package and the invoice should be in there too. I have since spoken to another consultant who again sent an email and copied me in to numerous email addresses and I am STILL awaiting feedback a week later. I have emailed asking someone to contact me and get no response. I get emails with a import duty amounts which is incorrect. Why does it take so long for the issue to be rectified. This is pathetic service and next time definitely won’t be using this courier service