Not trying to be mean but...

I'm not trying to be mean but that is very much overweight. In fact, according to the BMI scale that is 3 pounds from being obese.  

This hobby is very much unregulated and providers have a right to see who they want and don't want. As far as her not wanting to see overweight gentlemen like yourself, maybe the thrusting is uncomfortable or maybe just laying on top of someone causes unnecessary comfort. Whatever the case they have the right to refuse, especially if they have seen you before.  

Treat this negative as a positive..... maybe use this as motivation to lose 35 pounds.

I'm 6'3" and 240lbs, have seen Rachel several times and she said I was "handsome" and like my muscles.  Sounds like that was an excuse for perhaps something else like hygene.

Be realistic, If your chubby do something about it. Here are a few suggestions, go to the gym,
Stop eating crap food , and do some research on increasing your testosterone levels. ( naturally) This will
build muscle and reduce fat quickly.
  One more thing, if you slim down two things will happen, your dick will look bigger, and she will  
tell you that you have a sexy body. Also your stamina and endurance will increase and you will be
able to fuck a whole lot better and longer.  It takes some commitment and willpower. But the results  
are worth the effort.....

1. I understand it is easy to jump to the conclusion that "fat" is a body statement. I have no idea what your dick looks like (and really have no interest so please don't post) but perhaps girth is the issue. Just offering a potential alternative.  

2. Why take that too personally. Even it the one provider is calling you fat and the agency has passed that on to you since you didn't take the hint she didn't want to see you sounds like you've had a lot of other great sessions. Why cut that path off by dropping the agency? Seems a bit like cutting off you nose to spite your face type thing.

Nothing wrong with a woman saying no to someone who is much bigger or heavier than they are.  Most of these girls are 100-120lb.  Would YOU WANT a 330lb woman on top of you?  I'm guessing....no.  It's not comfortable to them.  Understandable.

It is what it is.

I say this as a fat man. I'm shorter than you. I weigh 100+  more than you.  

If Rachel doesn't wanna see fatties, you can either lose weight or move on. You can't force someone to see you who doesn't want to see you. That's the benefit (or in your case, the downside) of this being an underground industry. They're allowed to be flat out discriminatory in their clientele.

Elite Models should've been more tact with you since you were a frequent customer. But honestly, you've had a lot of good experiences with them, I would continue to use them if I were you.

It is what it is. She must have some bomb pussy to make you abandoned the entire agency over one woman.