Delhivery — Stolen my parcel

Awb[protected]
This awb reached destination on 4th after a delay and it went missing as per delhivery staff after few hours and they later updated it’s not missing in the tracking and on next day it again went missing.Are you serious delhivery staff it’s clearly stolen and used by your staff in kohima Nagaland and you guys doesn’t clarify it although after delay of one week you want that I should wait for 3 more days for your so called investigation.Let me know what type of investigation you will do when your staff members are thieves