Myntra.com — refund not credited

Address: Udaipur, Rajasthan

I am user of myntra i cancelled products on 23 june 2019 but the amount was not credited back in my card as they keep saying they intimated the refund but it's now 13 days since then where the miney has gone then i have gone to bank they are not helping they can't track the reference number they want transaction id which myntra don't have now what to do