Unsatisfied with the level of Customer Service(blame shifted on me)

I am extremely furious at the level of Customer Service by Takealot. I bought a kitchen Cabinet that was delivered unassembled. I ddint get people or someone to assemble it the very same time it was delivered. When the box was opened for the Cabinet to be assembled the top glass doors were broken and how the planks were packed was not right. The glass doors were not covered in anything and a big long plank was put on top of them. How do you put something heavy on top on a fragile glass? After realising that the glass doors were broken then the box was sealed and tapped and I then logged a return with them . The product was picked up for evaluation. Today I received an email stating that my return has been declined due to it shows a visible user usage. What visible user usage??? First of all how could I have seen if the glass is broken without opening the box? I had to open the box to see that. Now it's my fault that the glass door got broken. I'm not going to pay for something that came to me damaged and I didn't use. I'm am told that the product is going to be returned to me how it is and they are not somehow prepared to help me in any other way. I am not going to pay for something that was delivered to me damaged and I did not use. I want my refund back or an exchange.