Netmeds.com - Received duplicate tablets Returned but No refund

I ordered Amway tablets on ** January and recieved duplicate tablets on ** Jan **** as the barcode was scratched so I asked for return and refund. The product got picked up in its original condition, from the day it is picked I am asking for refund status via call as well as email but there's no proper response from Netmeds. Sometimes they tell it is initiated on ** Jan, sometimes they tell me it is initiated on ** Jan, No email mentioning that, today in ** February from morning I am calling them, now they asked to share the bank transaction details as a proof it is not reflected in my account, I did that too, again I called for resolution they're asking me to wait, they're not even ready to share all this on mail. M not sure what to do.