Zefo — No response from customer care for a product ordered

Hi, I have placed an order in September and the product had got delivered much delyed than the date given. Even that was still ok but the product delivered was not the one I ordered. I have been trying to contact them in every forum writing email every day but there hasn't been a response so far. There is no way we can even reach them over call. They aare too negligent and been cheating people by sending wrong products.