Missing Box and NO help or support provided

My Avon order was delivered a box short. I called the call centre yesterday to query as no-one rep**** to my emailed query! Palesa, the lady I spoke to, checked the system which shows that Avon gave the courier company two boxes, but on the courier side it shows they only delivered one of the boxes. She said she'd query with the courier company and get back to me, which she never did. I then called again today and spoke to Mondli, who said he'd send me the invoice to tick off the items I'm missing, and would forward my mail to his supervisor. I still haven't heard back from him. I took my own initiative to email him the list of codes and product descriptions for the products I'm missing, but still have not received any feedback! I don't see why I should have to run after people who aren't bothered to assist me, and why I get stuck in the passing-the-buck game between Avon and the courier company Avon chooses to use! Now I have to waste 45mins a day on phone calls to the call centre and my customers sit without their orders! Just send me a new box with the products I am missing, and sort your own battle with the courier company privately!