Overnite Express — parcel not delivered

I have send a parcel through overnight express limited courier service to bangalore on 17th of may 2018 through air. It should have had delivered the next day but it's 19th of may today but still my parcel is not delivered. I have paid higher amount so that it deliver the next day but the outcome is not what it supposed to be.
Kindly see to my issues and reply.
Consignment note number is [protected].