Assuming you spent 10 minutes doing this, then it was actually 10 minutes wasted of your day I'm afraid, Mary.
The website drips with fake users to an unbelievable degree, a truly astonishing, nauseating, depressing degree.
The reason it's a waste of time, is that if you come back and check after a few days, you would realize that the flagged jobs or account still show some activity, or at least are not closed.
Just happened to me right now, I was scammed 2 days ago: after 5 hours of intense work, I uploaded said work, then they closed the contract (it was my fault for falling for an account with no history, and not using the tracker).
All I had left was to flag the job. Today I got a message being told that the client has reported and blocked me.
I chuckled at how ironic it was to be reported by the thief.
Actually, I somewhat disagree. I have flagged profiles sporadically since ODesk days and sometimes it works and sometimes it doesn't. I don't feel like I wasted my time at all. Sorry for your problem but you really need to use the tracker all the time, every time.