Docusign Director, Web Customer Retention interview questions

Was contacted by HR via Linkedin. She asks for my availability and doesn't give a call at the pre-decided time, or even a heads up that she can't make it. A couple of hours later apologizes, and sets up time again. Again, its been an hour and no news. My time is too important for this, and honestly no matter how interesting the role is, this lack of professionalism has put me off the company entirely.