Iberry India — refund not yet received

I had ordered battery for iberry's auxus note 5.5 on 19sep2017, order no 22482. Due to out of stock, iberry's executive called me and told that battery is out of stock and your money will be refunded soon.

I am surprised that, even after near to three months from the date of order, money is not refunded to my original mode of payment which was credit card.

Kindly help in getting my issue resolved and action against this company.