Without knowing exactly what happened it is hard to answer your question. A deportation is the forceful removal of an individual from this country. Meaning, they made someone leave, the person didn't leave on their own.

A voluntary exit, is when a person chooses to leave the country, without being forced to do so by a court order, or legal action. Meaning they recognized that they should not be here and left by their own decision.

As far as how long you are banned from returning, this all depends on what someone did. If a person gets deported, they are usually not allowed to return ever.

If a person was asked to leave and did so as a voluntary exit, then you need to ask the immigration authorities when they can return.

My husband left voluntarily and he didnt receive any paper during his exit. And now that we're tryng to fix papers i need that piece of paper stating his leave, Where can i go to get the record of his voluntarily leave?

Well if you exit voluntarily you may not get wrestled to the ground and sent into deportation for 6 hours. Could be worse, they could just shoot you. Oh no that would never happen. My friend talked about voluntary deportation before I forget the specifics. I would imagine I am right with what I said in the beginning though.