Oziva — I am comllaining about oziva product which was not yet recieved and shown delivered

I ordered oziva product which is a prepaid order I got tracking id but it was showing product delivered but I am not even received the products . it's already 3 days as passed. i have sent a mail to oziva. there are not responding properly and there are not responding.I in tracking id they didn't mantion the location where they had delivered my product.Its a prepaid order .please help mw to get back the maoney or product.