Restaurants generally don't answer the phone if they're busy. Try during a down time in the morning, maybe right before opening, otherwise show up in person or try corporate.
You could try their website. I will take a look and let you know
Are they on facebook? You can give feedback here. And I would go in and complain. Or try another store. P.S. 99% of answered are NOT the management nor employees. But other Google readers-users
Thanks! Your answer is awaiting moderation.