Usps — play with package

Address:

Surat, Gujarat, 395010

My package come from usa via usps tracking number is ua[protected]us, its a take above 45 days and i didn't recive
When i contact usps they say me, thier r no responsibility after your package moving our last destination they say me contact india post but when i contact india post and give a tracking no. They say india post not recive my package so what can i do? It's stuck in custom, if yes then how can i know, and how can i clear..