Have a brand new (never been fired) CZ 550 American (.30

and the trigger does not work. It was working but now you cannot pull the trigger. Yes the safty is off. If you push the trigger forward, it seems to click in place but when you pull the trigger again, it does not fire. I've removed the bolt, magazine, played with the safty but nothing seems to work. Any ideas?
I'm going to call the shop were I purchased it and if they can't help, I'll call CZ on Monday.
Thanks for any assistance you can offer.
Kurt