Medlife — refund of money paid through online

I ordered medicine on line with medlife through mobile app on 19.12.19. And made the payment online through the link received from medlife for the medicine amounting to ₹502. On 20.12.19, during delivery of the medicines, the delivery man insisted for cash payment for the medicines since the amount paid by me through online was not accounted. Hence i paid the cash and received the medicines. After i wrote to medlife requesting to refund the amount paid through online. Finally on 06.0120 reply from medlife as follows.
Greetings from medlife.
Order id:-or7012wz-008a

Please accept our sincere apologies for the inconvenience caused in this regard.

With reference to your concern, i would like to inform you that we have forwarded your request to our team and i am sure that they will look into it and do the needful within the next 48 hours.

For any further assistance, please revert us. Our team will be happy to assist you.
Looking forward to serving you better.

Thank you for choosing medlife.

Thanks & regards
Mohammad shah
Csd team
Till date the amount has not yet been returned.
Kindly resolve the issue.