Flipkart — Item returned but didn't receive refund.

I ordered shoes on 3rd April 2022, and received the same on 8th April 2022.
Since the shoe wasn't to my liking and the fitting wasn't great either, I decided to return the product.
Accordingly I requested a return in the app. Later the next day, item was returned and I expected a refund with a couple of business days. But soon, the app displayed a "refund cancelled" status.
Why exactly was the refund cancelled though? I returned the product in perfect condition.
I lost the money and product wasn't even returned back to me.
I request to either credit the refund or return back the product to me.

Order ID - OD[protected]