India Post — my parcel has not been delivered yet.

I have sent parcel (Rakhi for rakshabandhan) through speedpost on 7 aug 2019 from mico layout, btm, bangalore post office to port blair ho. And today is 18 of aug 2019. Parcel has not been delivered and no update in tracking website after 10. Their is no response from post office after lodging complain also. I need to know where my parcel is. And why it is not delivered yet. Highly disappointed with the service as in the name of speed post they are doing scam.