LifePro Financial Services Customer Service Representative interview questions

I applied for the Customer Service Rep position on Monday (the salary range was listed anywhere between $12-$24/hr which I found to be misleading...) was asked to interview on Tuesday for Wednesday morning at 10:00AM. I rearranged my current work schedule to make this work and accepted the interview Tuesday afternoon. Wednesday morning at 9:00AM I got an email stating they had “closed interviews” and were cancelling mine. Not a huge upset but seems to be a bit sloppy and unprofessional.