I don't have a lot of time for most agents. Generally, what happened was that I got an "urgent" request from an agent to see if we were free on a particular date, and to send him or her details of repertoire, a band photo, fee, etc. etc. Having sent in the stuff as a matter of "urgency", I then heard usually nothing for weeks and, on requesting an update, was told that the client was "still making their minds up". Then, mainly, nothing.

Sounds like the cold calls that I used to get from employment agencies before I retired. I don't perform professionally but from experience in other sectors I would say that if the agent is chasing artists then s/he probably isn't much good.

However, extrapolating from the way that job hunting through an agency seemed to work the comment about the client definitely rings true.