OYO — Oyo frauds of cashback

I have booked oyo room on 26-02-22 and there's a offer on OYO application to give Rs500 cash back if we do the payment through paytmpostpaid and i applied code - OYOPAYTMPP . waited for more than 20 days till now no amount is given by OYO and their all customer care executive have cut my call after saying we are checking it no response is given from their site . You take money so quick but why at time of giving cash back no satisfactory answer is given by your executives.

Here is my booking id of oyo room :

G9YR0799

Here's my transaction details -
Paid For
oyorooms
Order ID: hryp7tmjlc9p381l1eitir74

Paid From
Paytm Postpaid