Poor Service with bad attitude towards customer

I had a product collected from a shop in Boksburg to have delivered to the Secunda Depot Courier Guy. I was phoned in early morning time by the Secunda depot and was informed that my parcel have arrived. When I went to pick up the parcel the Courier guy counter assistant told me firstly that she hoped I did not come to pick up my parcel today. I ask her immediately what happened. She said let me go and show you. The result was that my parcel fell from a pallet and half of the one can spilled out. She immediately told me that courier guy is not suppose to transport anything that is paint like. I told that who is liable for the loss and she told me that is would not be them. I told the courier guy lady that if you are not allowed to transport the product why was I not informed and I also asked her that does your drivers receive training in cases like this not to accept the parcel. SHE responded that their drivers does receive training and the driver was not suppose to take the parcel. She also said that there is info supp**** with the waybill that courier guy does not accept paint like parcels. I told her I would never use courier guy again. She told me that if I want to fight with her that she would turn around and walk away. I told her I'm not interested in fighting. I still had to pay for the big disappointment of service that was deliver, I lost almost half of my parcels worth of product. I feel that when they took my parcel in there possession they accepted the parcel as acceptable and are liable for any damages.