IndustryBuying.com — Refund still not received after weeks and repeated mails

Address:

RK Hardware, Rengkai Road, Churachandpur, Manipur 795128

I've ordered INGCO paint sprayer booked on 10th June 2022, order ID [protected] Amount Rs 4585/ using Zestmoney and the order was never delivered, when I contacted customer support they told me it was returned by the courier and refund was already processed from their side and they told me to contact zestmoney and when I contacted zestmoney they told me to contact industrybuying.com as the refund was not received by them. Industrybuying told me to send my zestmoney account statement from the purchase date, which I did by sending them screenshots of my zestmoney account which shows no refund was received but I don't know if their customer service agents are literate as they keep asking me the same even after sending them twice. This pathetic blame game has been going on for weeks now. I've recently sent them a mail again to send me the confirmation or transaction detail showing that Rs 4585/ was refunded to zestmoney and i haven't got any reply.
I've attached screenshots for reference

Thankyou