Complaint regarding delivery charge by Myntra

I have purchased one dress from myntra and it delivered on 19.11.2023. Due to some reason I was not comfortable with my purchase and I request for refund. I have raised my refund request within one hour of receiving the product. But the refund amount is showing rs. 1005,where i pay rs. 1114 at time time of payment. Then where is my rs. 109. As it was a COD order rs. 10 was the COD charges. So I understand that COD was my choice. I can pay rs. 10 for that. But rs. 99?? No other shopping platform is doing so. And if myntra wants to charge for delivery fee they have to mentioned that thing at the final page of billing.