This is one of the most bad thing to happen on zynga poker.

There are two situations.

1) DOH

if you experience this then you are banned and you should accept and left with 1million chips maximum

2) Permanent bann

On this situation there is hope that you are not still banned. Sometimes if you try to log in on zynga poker from another computer maybe your account open but if it doesn't then you are permanently banned.

We try to avoid such things, ask us for more information