Looking at the OP, your date was supposed to be Monday. You gave her the benefit of the doubt, and more than enough time to sort out things on her end. If she was worth your time, she would have at the very least called or texted to let you know that it wouldn't work, if not also suggesting an alternative time. You've given her days to respond, but she hasn't. That shows that 1, she's not interested, and 2, she's not someone you want to be dating. The Brad Pitt rule applies. It's time to move on and find someone better, bro.