Ajio — Refund is not credited after returning the product

Website: Ajio.com

I placed an order on 7th March 2021 from Ajio.com, "Product name :
AUSK - Short Sleeves T-shirt with Colourblock Detail" which costed 335.72 Rupee, after receiving the order I found that the size was small so I placed a replacement order for the same and the replacement order was placed on March 27, 2021, after I receiving the replacement I found that the size is still small so returned the T-shirt on April 7, 2021 and the pickup was made but I still haven't received the refund for the T-shirt which I returned. I contacted Ajio multiple time but they kept telling me that the refund is credit on March 28, 2021 which is not possible as the refund is initiated on Arpil 7, 2021.

Order ID : FL[protected]
Exchange ID : #EX[protected]
Return ID : #RT33951411
Product name : AUSK - Short Sleeves T-shirt with Colourblock Detail"