Unhappy customer ****** of right to customer right to replace faulty part

Hi

I brought parts worth R5000 on the 25/06/24 only to find that one of the part is faulty (baring) and when we returned this morning on the 27/06/24 they refused to take replace it, interesting thing is that they asked me why didn't we send a picture that the part is faulty but when they issued the part they didn't open the box for us to see that everything in the box is in good condition

I want my part or refund so I can carry to fix my car which is standing without baring to complete planned repairs