I received a call from a recruiter based on my LinkedIn profile details. The recruiter scheduled a Skype/phone technical interview on a working day, at an odd timing (noonish).

On the interview day, about 30 minutes before the scheduled time, I received a call from the recruiter about the interview's cancellation. The reason given was that the interviewer had declined the calendar invite. They never bothered about the candidate's schedules and calendars.

The recruiters were so lazy to call back about rescheduling the interview details; for them, it took a day long. I lost my day because of such slippage from their end. Recruiters never think a candidate's time is also precious, just like an interviewer's time.