Efello.com — never received a refund

i ordered two dresses from efello.com. One has been delivered after two months because other was not available to them. So they offered me a partial refund and suggested that it might take 28 working days to process that. however its been more than three months on money in my account yet. I tried to contact them over phone and chat, as soon as they know why i am calling for, they put me on hold and never come back. Then i email to their customer service and to their manager but they dont bother to response. As customer i have paid for something, didnt receive the product or refund and with all the hassle, it was not a very good experience.