Defective Product and Refusal to Provide Refund by Zariknyaa

I purchased a product from Zariknyaa, but the product I received was damaged/defective. I requested a return and a full refund, but the company refused to refund my money and offered only an exchange. Later, the company informed me by email that exchange service is unavailable at my PIN code. I am therefore left with a defective product and no satisfactory solution. I request assistance in obtaining a full refund and arranging pickup of the defective product. I can provide the order details, product photographs, and email correspondence as evidence.