Myntra.com — Refund for my slipper

Address: 32/1 Ekbalpore Road Kolkata 700023

Website: Myntra

I had ordered 2 Benetton slippers one amount 625 and the other for 584
I got delivered a cartly London slipper for 1213. After requesting for a return with the picture send on the Myntra app rhe delivery agent was assigned and he asked for 2 slipper where as I had only received one worth my total amount that was 1213 so he took that and has initiated amount to be refunded 625, please help me get my remaining amount back I’m attaching the receipt and pics below