faulty

I bought a nice light for my lounge in China Mall, Arcadia ,East London on installation we found that the light is faulty because its not working and we decided to take it back and unfortunately we lost the slip and now they saying they cant replace/refund without a slip. Everything is still in tact even the price on the box is still there. We paid R1300.00 for the light. My no is 0720835382