Koovs.com / Marble E-Retail — Looting consumer by not refunding

I returned a trouser on 3rd May 2022, my order id is K305470. They were supposed to initiate a refund as soon as they received the product but they did'nt care to. I have been constantly mailing them at [protected]@k2retail.in, they replied to me once and after that they stopped. This unethical behaviour on their part is just unacceptable. I want them to mail me back and initiate the refund or i'll have to proceed legally.