I and thousands of others lost there jobs today.

I work for a company called wirelessadvocates/cartoys and as of this morning it no longer exist. Its the cellphone company inside costcos. It has honestly been a terrible company in many ways but i milked it in a few ways that got me extra money over the years. We were never given any warning of a shut down is there anything I can do? I believe they have to give us some warning. Would it be possible to sue them?