experienced this. In fact, a few times I've experienced the opposite - ladies providing services (like DFK and BBBJ) that their profiles and reviews say they do not.

Women in this business are real life human beings, not automatons. Different clients can give them differing comfort levels. What they may do with client A on a certain day may not be what they do with client B on a different day. I have found that intimacy, along with menu options, tend to increase with follow up visits but that is just my small sample size of dates.

The best guarantee of getting the best experience is to be born handsome, same as with civie chicks.

And I have no problem with the practice there.  
Start with a relatively inexpensive M&G that includes a happy ending. Her screening is probably light, scheduling easy, and you get to evaluate your compatibility (she looks like her pics and is enthusiastic about her service). Then for what is likely a modest upcharge other services become available. If you're going to invest in an unknown (to you) this isn't a bad way to go.

 
Honestly, I can count on one hand the number of FS escorts that I have repeated with more than 3 times even though the entire playbook was open from day one. On the other hand, I've repeated numerous (10+) times with a dozen FBSM providers who all started with a basic rub and tug and expanded from there.

I don’t like providers who hold back on the first meeting, to me that’s no difference then the providers who upsell, I have a saying: never again, I don’t know if I could trust her next time, so I don’t go back, it’s to many providers who don’t play that game, those are the ones I give repeat business to!

that is listed on her profile or in her web ad, it would not stop me from repeating.  Some providers consider certain services to be too intimate to do with a complete stranger, so they wait until the second meeting when you are "old friends."  I can usually tell from the social connection we have during the first visit if I'm going to repeat or not, regardless of what services I did, or didn't, receive.  There's more to these ladies than "who can take a pounding," so I don't mind investing a little time to see what they are comfortable with for me as an individual if we have a flirty connection.    

 
To get to your specific example, if she didn't do BBBJ, but it says she does in her profile, then I agree, there is no reason to come back.  The profile is usually set up by the first reviewer, so presumably, he or she got all of the services that they listed for the profile.  However, if her profile says CBJ, but she said if you come back you can lose the cover, there is no reason to think she won't do it.  If she doesn't, then you don't go back, but you should never expect off-menu services on a first appointment with a provider that is new to you.  Those come with time and familiarity.  At the same time, it's incumbent upon the ladies to claim their profile and make sure it's correct.  TER will let you correct your own profile to conform to your menu du jour.  

Arguably the greatest escort to ever hit this town (Dara) was an ultimate anal queen.  She wouldn’t do it with you the first time.  I respect that business plan.

An asian girl I once saw - who I liked a lot - told me that her services and prices are set by her agency. She'll provide a lot more if I contact her directly. I took her up on it and booked directly with her the next day.  

It turned out to be a big mistake. She ended up squeezing me in between other appointments and I had to park far away, be very quiet (so her room mate doesn't see or hear anything) etc etc. It was a disaster.

This is an illogical practice that some likely do do. As the saying goes, "You only get one chance to make a first impression", so if she holds back during the first meet-up thinking I'm going to come back, she is sadly mistaken. It's like going to a job interview and holding back from telling the interviewer some of your good qualities or not putting them all on your resume - thinking you're going to reveal them after you get hired; good luck on getting a call back.

Some providers have a delusional mindset and treat their sessions like a traditional civvie courtship rather than a business transaction, where they want to build a connection over time...most sensible guys don't have the patience for what they 'might' get down the line from any said lady. Way too many options for us out there. This is the reason why a lot of us see providers to begin with; to skip over the traditional courtship process, and go right from A to Z...