So, a client calls me for an appointment. We chat a bit, I text him directions. I have another client texting me as well. I usually don't take appointments within the hour, but I was only 15m from my incall. Suddenly, the guy who booked, starts sending "wavering" text messages. He's not sure, he thinks I'm in a "bad mood", he doesn't think we have a "vibe"...

And I only thought women only did that. I have had bad vibes and as soon as that happens I would stop it right there. And you look pretty good dear I wouldn't walk out on you

you probably could have figured out this was a waste of time

and 90% of the time, I leave very happy.  
He is clearly having mixed feelings from the beginning.  He is anxious to see some one but has been debating with himself about guilt, fear, money, who knows?  
You have great reviews, your pictures say he opened the door on a very attractive woman. This was all a battle inside his head with fear and guilt over coming desire.
His loss.

... financially.

how a provider should not handle troublesome texts (or any other form of communication) from a flaky, time wasting client.

collect your donation, its not your fault he decided to leave. You have a life too. And if he didn't give me the donation I would blacklist him and never see him again.  

I've had guys literally poke poke poke me over the years when nothing was wrong. I just start poking back and eventually one of us pops. It's an interesting game, but I stopped proving everything is ok and just say yeah I'm mad at you. You're an awful person. How dare you?

That you wouldn't walk out because she "looked good."  What if you were disappointed in her looks once you saw her?  Would you walk out then?

three texts are included in the session price, and after that, its $5 a text message, so you suggest he save them for when he arrives in case he gets lost or something coming to the incall.  Email only when setting things up is a good way to go, as suggested by another provider here.  You will get a much better sense of the guys commitment, or not, from emails than you will from texting. If he wants to play 20 questions, you just stop responding.

with guys who are marginal hobbyists due to lack of discretionary funds.  They can only afford one session a month and they work themselves into a frenzy worrying about taking their ONE session with the wrong girl, and end up second-guessing themselves so much, they don't have a good time in the end no matter who they choose.  Providers never have this problem with guys that hobby at least weekly.  You get a bad session once in a while, so you forget it and move on.  No drama or anxiety necessary.  

But your explanation is perfect. I think we could add that some of these guys also start running out of funds after being regulars, but still want the attention. So they start creating problems, including something like showing up to see the girl, and saying she's in a mood.  

But it is all part of the business.  Usually I am in a great mood while setting my appointment, and then on the day of the appointment I do not feel so great.  Of course it all depends on the setting while meeting.

at the same time-
remember, you DONT have shit to prove, if your service is righteous.
He put off your balance- immediately put you in a "people pleasing" position, and if this is not your MO, well you learned the hard way it's better to shut it down in it's tracks, as opposed to wasted time.
I've found most clients aren't like this- thank gawd- but there is a good chance this is what the loser does, and gets off on it.
You are you, so OF COURSE you know you weren't in a mood.
Remember, own your space. Next time someone tries to manipulate you that way, now you know the bs that that can lead to.

cancel the appointment.  Excessive texting is one of the biggest red flags in this business.

I've been in sales, customer service and retail ops since 1968 and of the many life lessons I have learned in all that time dealing with literally tens of thousands of interactions is that some people aren't worth the money.

You see I wouldn't book a lady I didn't find attractive. So if I get there and I don't find a lady attractive there is an excellent chance her photos aren't an honest representative of her looks. If the difference is great enough it is called a "bait & switch". And I walk out of 100% of B&S artists not leaving a dime. But let's say her photoson are accurate but I breathed in to many paint fumes when I booked or something, in that case I would stay because it was my bad call.

Sometimes I exchange several texts with a lady before meeting. Other times the only texts are when I leave the house on my way to the appointment and then again when I get there asking for the room number. So even that is two texts, only one short of your suggested maximum.

B & S is a whole different ball game.  

Some of the ladies I've seen, usually the younger ones, are inveterate texters. They go through multiple texts saying nothing, just to initiate and maintain contact, it would seem.  

Sorry!!Thats annoying of them and rude! I personally would cut it all of the minute they get weird and question petty shit like that. Ive never had a guy question my mood like that before. Very strange!! Ive put up with so much fuckery so now at first sign if bs i tell them look elsewhere lol

This guy was practically shouting 'I'm a timewaster!'  

Guys that attempt to set the mood of my incall usually cause me to feel annoyed and I'll suggest we postpone meeting at a time that they trust me as the best lady for their craving.  

I can't really relate to this guy at all. When I am set to visit a provider I am like a kid waiting for the candy store to open.

Clicked on your profile and I see you are a transsexual.  

From my experience, the more questions a client has, the least likely they will do business or it will go wrong.

was not a new client, then there should not have been a vibe issue.

It's not true 100% of the time but when a new person is texting me and wants to figure out my whole life story I know he's not going to book.

It's one thing if both parties are enthusiastically exchanging texts, quite another when a new client starts blowing up a lady's phone.  I'm referring to the latter situation when I advise against multiple texts.