need refund

In february i ordered the books and paid the money as required only to realise later that they sent me a proforma which stated they dnt have stock for the items and was promised to be called as soon as atock is available. Two weeks passed and i called and still no orders, i then called again after two weeks but still no luck, after a month i requested for refund and was asked to fill in a refund request form and i did, two months later i still havent received the books nor refund