ChangeNow sent me ZIL, but after my complaint to Atomic that the funds were not returned to me after more than a month and after I reported some irregularities in their work and communication with ChangeNOW. Maybe Atomic put some pressure on ChangeNOW after all. I'm not sure.
Atleast you still have your ZIL back. Even though the price has been down a lot from the date you have problem on changenow, you still have luck to able get your ZIL back. Now i don't think you can sue them (from your post) because they were "hold" it for a month.