The Professional Couriers — complaint against delivery person

Address:

chikhalthana, aurangabad, Aurangabad, Maharashtra

The official site of the professional couriers is showing me that my consignment no.676306 is delivered on 28/09/19 from nanded to aurangabad, maharashtra.

But to whom they given i dont know, i have not recieved it. Their local office contact number is also not responding.
That courier contains my very important document and i cant even complain on their offical site because apparently it kept saying taht, error occured.

What am suppose to do now. This is not their first time doing this kind of thing.
Atleast they should have contacted me before delivering my courier.
My consignment no.676306. My name is shilpa suryawanshi.