immigration & Legal rights

Dear Sir,
I am a lawful permanent resident. I have valid SSN and green card. I was jailed for conviction of a case and after some time that conviction was terminated. After one year of my released when I came to a immigration office to up to date my document like green card and clear my case information, then some officer angry to me for unknown reason or may for my behaviors and then they put me in a hole of a concentration room for three days, after this they collected my sign in voluntary deportation document and deported me illegally and took my all documents like SSN and green card etc. when I came back to Bangladesh then this reason the cause of my father’s brain stock and he died. Now my local embassy does not give me any cooperation in this matter. Th