Hartmann Young interview questions

HY recruiter responded to may application via LinkedIn stating she would like to interview me and requested availability. Replied with days and times available. Her response -- OK, I will call you at 8:30 AM. Sent three emails asking to confirm the date -- zero replies. Went from "interview!" to ghosting. Extremely unprofessional and noticed other posts here with same experience. My advice -- do not waste your time with Hartmann Young, move on. There are much better recruiting firms out there. Found their recruiter to be extremely unprofessional and disrespectful. I did see she was active on LinkedIn -- devoting time to "trivia and fun" posts.