Zelis Client Data Administrator interview questions

The interview itself was less than 7 minutes. The Interviewer was relaxed at first but got seemingly tense that I mentioned that the average salary for the position to be 74k for St. Louis MO (one of the sources being Glassdoor). I was first asked what are my salary requirements, so I mentioned being comfortable near the average listed. She then said it was $21/hr and entry level. Why ask first what are my requirements if you have a salary cap anyway? Shortly after, she said something along the lines of good luck finding another position and promptly hung up.