My blonde wife went into a prominent gun store in Houston to browse. Plus, she had some particular gun in mind. Now, she has been a CHL holder for many years. She went through the 12 week Harris County Citizens Police Academy. She is a very good shot and quite often out shoots me (not hard to do). Loves guns and is quite knowledgeable of them. But, she was treated like a 'dumb blonde' and actually insulted by clerks since she didn't just accept their opinions. She left the store and later told me of her experience. I was instructed to never do business with that store or any of its branches again. I obey this command.
As a customer she has every right to not continue doing business with them, if she had a bad experience there.