H&m — Refund issue

I placed an order on 31st july and my money was deducted and i didn’t receive any order details and after the money was debited the h&m site showed that it will be refunded within 5 days and it’s been more than a month and i haven’t received my refund yet . I’ve made 14-15 complains on their CUSTOMER service and it didn’t help a bit !!
Such ### CUSTOMER service and so is their IT team !!!