Reliance Trends — delivered wrong product

Address:

Ernakulam, Kerala, 682024

I gt delivered the wrong product as i order a shirt worth 770 and i now got 4 item worth 100 above and i payed 770 itself.. That bill on the box is my name but on the other side of the bill there another one persons name and details and cam to know that they put wrong bill.. I cant return the product aince my product is not yet delivered in my account.. Plz help customer carw is not even picking up the call