Gartner Client Relationship Manager interview questions

Gartner recruiter sourced me on LinkedIn on May 13th. We scheduled a 30 minute interview for Friday May 22nd . The recruiter reached out to me less than an hour before the interview to cancel and reschedule for the following week. I followed up twice to provide availability and have had no response. This is so unprofessional and reflects poorly on Gartner. I worked as a recruiter right out of college & am well aware of the reason this took place , and I at least had enough professionalism to inform the sourced candidate that we decided to move forward with a referral or other candidate.