Ajio — Purchased from ajio, returned the products but didn't receive refund.

In the month of July, I have ordered glasses and trousers from Ajio with order ID #FL[protected]. I have returned the products and expected refund. As I have made the payment through UPI, I should get the refund instantly soon after they initiate the refund process. But still I did not receive any refund. It's been more than 4 months and I did not receive refund. I have contacted the ajio support multiple times and I have received the same response saying "we have initiated the refund". I have provided my transaction screenshots to the ajio support saying I did not receive any refund. Even though I have provided all the proof I have not received the refund. Now here I raise a complaint and expect my money back. Please help.