Exchange dragging for way too long

I ordered a pair of jeans from them and unfortuantely it didnt fit (small), i logged a return(exchange) but i was told their i am way out of reach for their courier , i then request for their address so that i can send them the item and they refund me, from this i have not response and i have followed up a few times, i didnt not expect this kind of experince from them its disappointing