Ekart Logistics — Your return pickup agents are cheaters ?

Hi, I had initiated a return for a t-shirt purchased from Myntra, and the pickup was scheduled for October 5th. The delivery agent collected the item on that date, but failed to mark it as picked up in the system. As a result, Myntra now claims they haven’t received the product. I have a voice recording of my conversation with the person who collected it.
Given this situation, should I consider filing a police complaint on the grounds that someone posing as a Myntra delivery agent may have fraudulently taken the item? Please advise.