MedData Intake Advocate interview questions

Was contacted by e-mail to set up a phone screen interview. Time and date was set up. When the time came for the interview I received no phone call or e-mail stating that the time had ben changed or cancelled. Very disturbing that a company would do that to a potential employee with complete disregard for the time set aside. I even sent the HR an e-mail asking what happened and I have received no response.