Myntra.com — Didn't received the product but they marked it delivered

Ordered 4 items of bath and body works from Myntra.They delivered 3 items on 1st Oct and 1 item status was showing pending delivery. I checked on 3rd Oct and status of pending item was changed to Deliver but I was not. I raised the concern immediately on 3rd Oct.
They created an issue# IN[protected] and ensured me they will look into it. I checked a couple of days later in app they marked that issue as resolved, saying they checked with a logistic team and they confirmed order has been delivered.
Since then I have been following up with them, but no luck.