You still may need them for a reference someday.
Don't misunderstand me. They are definitely the ones in the wrong. But I'd still hold off making any kind of complaint until it's certain that they didn't cut you a check with the last payroll.
Ten years ago I'd have told you to call the state DOL at 8:00 am on Tuesday morning. But the economy has changed and as I said above, you don't want to burn any bridges any further than they've already been burnt. You're employed, you've waited this long, you can't do anything before Tuesday anyway, what's two more days?

