Received a different product which I didn't ordered

Recently I have ordered a H&M men beige crudruoy jacket and a H&M long white coloured t shirt but received a different product from H&M which I didn't ordered.As per company norms I have requested for a return/refund policy and have sent all the related details along with tags,images of the product,still no approval for the return pickup and no good response from their site.I have been trying to contact them but still no good response from their customer service