Perficient Business Development Executive interview questions

I had 1 phone call with Perficient's Talent Recruiter after I was contacted by a third party through LinkedIn. I was first informed that this role was put on a hiring freeze but two weeks later was contacted by email to set up a phone interview. That call lasted 45 minutes and we set up a follow up call for the next day. When the I did not hear from him at set time I emailed and was asked if we could push call back one day. I agreed and then never heard from him again. I sent multiple emails and left multiple voice messages. I am some what new to the job search after many years, but I feel this is inexcusable behavior and leaves a bad taste for the entire company. If you schedule a call or meeting and then decide to cancel, have the courtesy to explain this decision.