Myshopify.com — About my purchase order

Address:	Nayakem Organics Pvt Ltd,plot no. T-128, opposite vadilal dairy,boisar MIDC
Website:	Myshopify.com

I have order two night dresses from myshopify.com...order had placed...bt no confirmation msg was sent by them and still my order has not placed..when I reopened the site it shows unavailable... payment was done by my side but my order is still not shipped and there was no response from them ...i want my refund back