Apollo Pharmacy — Refund Not Received (Paid through PhonePe)

I had ordered some items on 20-Sep-2020 and my Order id is:[protected].
The Amount is paid (Rs300) through PhonePe app.
Txn ID:S2009201306151497711556.

This order was cancelled due to money demanded from the delivery agent for COD. Following which, the items were returned.

I had contacted Apollo Pharmacy then and they assured refund will be initiated an will be notified a refund id. That action didn't happen.

I contacted again after 10 days and again assured the same story.

Till now I had made four remainder calls to the customer care in all which i had been given assurances which always turned unworthy.

Further I had contacted online representative who repeated the same story.

The issue is pending for two months and still no resolve initiated in refunding the money.