India Post — Complaint for the pani gaon office staff

Address:

Assam, district:-lakhimpur,PS:-panigaon,pin:-787052

Sir /madam
I'm from Assam, district:-lakhimpur, 787052
Tracking id:-cv[protected]in
Despatched date :[protected]
Cause:- delay in delivery
It's a very important parcel for me but pani gaon post office staff said we can't do anything to your parcel because we can't receive any parcel in this tracking id.i don't know what's happening in my parcel.office staff said we can't take any action about your parcel this is not our problem this is your problem solve yourself.don't come again in office . please help me sir/madam how can I get the parcel.please help