Advanced Recruiting Partners interview questions

I was interviewing for a Recruiting Coordinator position with one of their clients. The recruitment process was the type that gives recruiters bad names (I am a recruiter myself). The client interview was great. Getting to that point and afterwards, not so much. I was contacted by a recruiter on Linkedin about the position, and then later contacted by the sales manager to schedule the client interview. After confirming via phone, I reached out to the recruiter for additional details regarding the call, who I would be speaking with, etc. and never heard anything back. I had to follow up three times to get the name of the interviewer and then reached out afterwards to discuss the interview and never heard anything back. I also followed up to check the status of my candidacy and never heard anything. I am not sure how they are in business if that's how they treat their candidates.