I went back. Give them another chance.
Me: Do you sell paint stripper for brick?
Them: once paint is on brick, that's pretty much it. It's done. We sell paint stripper but...yeah, you're out of luck.
Me: you just reminded me why I don't come here.
I didn't ask for an opinion (yet) I wanted to know if you sold a product then show me the product, tell me about its pros and cons and let me decide.