no accountability

I wrote a report about Homechoicr delivering an item with missing parts,they contacted me after a few days and had some questions about the item and itd missing parts,i asked them to call my mother since she is the one who recieved and has the item,the agent then got back to me after talking to my mom and claimed that we used the wrong item code to order hence the wrong item,i came home to do the whole return ptocess and my mom showed me the item and the code was exactly the same as the one we used to order,i'm disappointed at the fact that they could't take responsibility of their mistakes but they instead try and put the fault at the customer...i'm actuallu very hurt,i had to pay R75 for returning,i'm deeply hurt.