India Post — Eg[protected]in-returned back

Address: Ahmedabad, Gujarat, 381022

I have sent aforementioned tracking number item to deep river on, canada and surprisingly it's returned back as per tracking system. May i ask you why?
I had sent forms and supporting documents to my wife pinal shah residing at 2-19 champlain street, deep river, on, canada k0j 1p0 and without being delivered to intended address it's return back.
Do you know how much important for us to get on time? Who is going to pay for my all loss?