Mode de Madames LLP - Package not delivered and money store credit not refunded even after taking back goods They have not

They have not yet delivered my package amounting to INR **** (order no. ****) and also not refunded amount of INR *,*** (order no. ****) even after after taking back the goods, saying that they will give store credit and wont refund the amount, even the store credit has not been given.