He’s a good dude.
First, let me apologize for those assholes. They are, unfortunately, still a vocal and disturbing part of the community. No one, regardless of gender, race, age, sexual orientation or anything else, should have to put up with that bullshit when they just want to read comics.
Those troglodytes are probably against new female readers, and as such, they will probably not have their business in a few years. And that doesn’t help anyone.
Don’t be intimidated about SDCC, though. There’re so many people excited about sharing their love for all the geeky stuff there—and so distracted by the insane number of things to do and see—that you should be a-okay.
Do me a favor. Send me another message with the name of the shop, and general location. I’ll find you some alternatives. Please don’t give them your money again, if it was the people working there who pulled that nonsense. And I don’t need to publish that publicly if you prefer. I can keep it between us.
I’d like to tell you this won’t happen again. I’d like to tell you that no one’s going to give you guff because who you are and what you like. But that’s just not reality. Hopefully you’ll find a shop that welcomes you and get to know the better parts of the comic community.