[Resolved]  Flipkart — refund not credited in account while flipkart website refund completed

Hi,
I had ordered an Realme X phone from Flipkart on 9th August 2019 with exchange offer(old mobile). However the delivery guy refused to pick up my old device stating it was damaged when it was not with device being in accord to Flipkart exchange policies. Looking at the rude and illogical behaviour of delivery boy i decided to cancel the order.
The order was cancelled on 13th August for order number OD[protected].
As per Flipkart, the refund of 15799 Rs was supposed to be credited by 16th August 2019. This has not happened yet. Suprisingly Flipkart website shows refund completed without any transaction reference.
I called up Flipkart support for transaction reference of refund the representative was unable to provide transaction reference. Further he is unaware of the mode (NEFT/UPI/IMPS) by which Flipkart made this refund transaction.
How is it possible that Flipkart doesn't have transaction reference for refund of Rs.15799 if as per them it was initiated and processed?
Its really irritating to listen to the replies given of Flipkart customer care since most of them are hapless and clueless.
To add when I asked for their escalation matrix they state that they do not have any escalation matrix, everytime "cs.flipkart" is provided for escaltion when it is customer care email id and not of escalation.
The customer service is really bad and you cant track progress of any queries raised on Flipkart website. Even now Flipkart representative state issue will be resolved in 24-48 hours on phone but refuse to drop an email on that.
Is there any way of getting this expedited? It has been 3 days since Flipkart promised date of refund i.e. 16th August 2019