Myntra.com — Myntra did not give me my money back

I bought 2 items from myntra on 7th feb 2021 out of which i cancelled one and returned another . I got the refund of the returned item but its been 3 months now, and i did not get the refund for the cancelled product . The total amount was 3928rs out of which i still dont have 2728rs . Myntra has only provided me a reference number but I have confirmed from my bank that they have also not received any amount on behalf of me. I have contacted myntra for several times over phone but there is no response from them.
Hence requesting you please look into the matter and help me out.
Order id - 116458602568214519403