I had an appointment with her at 9:00PM - same thing. All doors were locked and no one answered the phone. I made the appointment around 10:30 this morning, and everything seemed OK. They have my cell number but didn't call me to say they were closing.
Sunday, I had an appointment with Penny at midnight, but they called around 11:00 to cancel, so they are somewhat good about calling when they have to cancel.