Tshirtzmall — purchased printed of 2 shirts and got wrong thing of wrong size

The cheapest company i have seen in my lyf. The blood # company. They cheat people while sending wrong product. I have buy pack of two printed shirts and they seen two tshirt wid cheao quality and of wrong size. Plz help me with it how i refund my product and get my money back. Take a action aganist this fake conpany. I have mailed it server tymes bit no response has come from company. Plz help me to resecue my problem.