Sorry there is a long lead-in to this question. It's a specific complicated situation and the background is part of it.
I am on retirement/long-term sick leave. I do a certain amount of tutoring online, mostly in math. It brings in a little much-needed cash and keeps me busy and my mind occupied while too much housebound.
There is a lot of competition for tutoring students. The company's new management keeps adding more tutors while the student body is not increasing that fast. I manage to get some by tutoring very advanced and weird subjects that few other people do and by being online late at night. New tutors have a hard time getting started. Most of the new tutors are undergraduate students, and most of them don't stay long.
Another problem is that we are in competition with people who tutor for free, from peer tutors at schools to various sites and even the Mathematics Stack Exchange. The only way we can keep clients is by providing very good, very focused work and helping students in detail. It is to be understood that most students on the tutoring site are badly behind, unsure of themselves, and lacking in a variety of skills including being able to search for themselves.
A lot of people try to use the site to cheat of course. They post homework and expect an instant list of answers, they post take-home tests online, and some even want to arrange live lessons during their tests. The particular company tries to maintain a professional and academic standard and we are not supposed to help on any tests or equivalent; on homework we are supposed to lead the student to the solution and teach the method, not just hand out answer lists. There are people who don't live up to ths code and the company tries to weed them out, one reason I will work with them.
Also we get a lot of students trying to scam us to get work for free or at least cheaply. Two favourite tricks are to ask for help in the chat box rather than signing into a paid lesson, and offering to pay outside of the tutoring company's system. All tutors are required to go through a training sequence where we are given repeated instructions not to tutor through the chat box. This information is also repeated in the FAQ.
The tutoring company has a private facebook page where tutors can contact the company representative about problems, ask each other for advice, and share concerns. It is sort of an online teacher's lounge. Everyone talks about the difficulty getting enough students and the number of people trying to cheat; it's a running discussion.
So . . . the situation. A girl posted that she is a new tutor and had her first student. The student needed a long English paper edited. It took four hours to do the whole thing. But the poor student didn't have a credit card and wanted to pay the tutor directly by Paypal. The tutor agreed and did the four hours of work through chat. She wanted to know when she would be paid and she is very upset because she needs this money badly to pay her rent.
A couple of other tutors replied and said no, you've just been scammed. The original tutor posted another time, saying she worked so hard and she needed the money so badly and wouldn't administration do something?
I stepped in here and made a firm but still moderate comment. I started by saying "Didn't you take the training courses? Didn't you read the FAQ? Have you read the posts here on this page? You could not possibly avoid seeing that you are never supposed to tutor through chat and you are never supposed to arrange alternative payment, and very sorry, yes you have been scammed and your time and work and money are lost." I also pointed out that her actions cause trouble for everyone because having succeeded so well in one scam, that person will certainly try again and will tell their friends. Many people, five over the first nightt, may not have had the courage to wade in but liked my reply.
The girl blew up at me. I am supposed to be a professional colleague and am supposed to support her. I am not here to belittle her or disrespect her. I am awful and cruel to innocents. I am a terrible person and should not be teaching (heard that one before).
I replied again, by this time a little less friendly, and said that when I want to disrespect and belittle her, she will know it. Then I repeated that it's too bad she lost her time and money, but if she chooses to ignore all the warnings then there is nothing anyone can do to help. I noted that she apparently decided the rules don't apply to her because she thinks that she is smarter and better in some way, but unfortunately the rule is there for good reason and because of long experience.
This got me another tirade. I am a horrible person and a bully among other things. I have to act like a grown-up, she tells me.
Short reply to that one: "Act like a grown-up? Your turn."
OK, so what do you do when someone claiming to be a professional colleague is a special snowflake who can break the rules and then come whining that they are being mistreated, makes the professional situation much more difficult, responds to factual critique of their serious mistake with nasty personal insults, and generally throws catfits if everything does not go their way and doesn't center on them?