Chiropractic First interview questions

the hr person called me to schedule for interview. Due to the supposed busy schedule, it had to be rescheduled thrice. i thought after the third time, it would be ok. but the third time was cancelled too. The hr peraon say will contact me again, it has been many weeks, but there is no response. Time and again, this company makes empty promises. this really makes me doubt its credibility.