Nobody should ever have to deal with body shaming at all. It's a complete and total douchebag move by people with more body issues than you. Don't let that get to you at all. It has nothing to do with you, just with them.
It's shame/mockery in this business that a lot of people do believe bigger girls should be compensated less. I have no idea where this nothing comes from, but it does exist. And some guys are just low ballers that want to play, but can't really afford to. So they try gunning for what they think is low hanging fruit to play in a hobby that is not for them.
Don't let any of this get to you, it will pass. Work on your brand, maybe rebrand into a new BBW phoenix out of the ashes.
Your always be my ATF