Plus size clothing

Pl

So I'm at work and I just had a woman scream at me because we didn't carry plus sized clothing. I apologized and told her it's not my decision what we carry in store. She then told me that by working here I am contributing to a fat shaming society. I honestly didn't know what to say or how to handle it.

What would you have done? And do you agree that by working somewhere that caters to small women, you're part of the problem?