Big fashion hub (Online shopping) - Wrong order deleivered

I made a purchase of combo of * shirts from bigfashionhub. I received completly wrong products from them. I had ordered for some thing and received another one. I didn't like those shirts which i had received.
I asked for return and refund through mail and call customer care services as well but they are just making me fool by saying that we are investigating with vendor client n all. But it's almost * month's now but nothing happened.