Relaxo Footwear — Not received my refund from last 50 days

I have ordered from Relaxo Footwear official website and returned two items (Slippers for women PUL 138 - size 6 and 7) due to size/fit issue. I have paid via Paytm wallet for instant refund. (as mentioned on Relaxo's return/refund policy). Its already reached at Relaxo's warehouse but i haven't received my refund yet.

My order number- [protected]
Order date- 21 June, 2023 at 12:35am
Order received- 28 June, 2023
Order picked up for return - 30 June, 2023
Order returned at Relaxo's warehouse - 7 July, 2023
Order amount- ₹1009
Amount to be refunded - ₹720

On July 20th they refunded me half of the amount and when i contacted them the next day they told me that i will recieve my remaining amount after few days.
Its been almost 50 days and still they have not refunded. They only say sorry for the delay and we have sent your request further but still nothing happened yet. I have already submitted a complaint here but no further action is taken yet.
Please help me out.