I got a job interview but all interview times booked? (CAN)

I got an email from McDonald's saying they want to schedule an in-person interview with me and provided some available dates and times. I saw the email four hours later and tried to book a slot, but none were available. The system just kept saying they would get back to me shortly. The store is currently being built, and there is no one I can currently contact, and I currently don't know what to do.