Robert Walters interview questions

After two 20 mins calls with an Internal Recruiter, I was asked to attend one of RS' RPO's for a face to face interview with their Head of Talent Acquisition. However, when arriving at the location for the interview. Was asked to wait 20 minutes by the receptionist with no approach from the interviewer to come out and apologise, considering this was in the working day and I had taken time out of work.

they have several rounds but first you have to go interview with all senior directors in the group and then managers. you have to go through several rounds with different team as well