Is this violating public accomondation codes?

[Koharu]

Violating accommodation codes would be refusing to use an interpreter to speak with her, or not having wheelchair accessible entrances if she were in a wheelchair. In this situation, there are generally actual physical differences in electronics bought in different countries, and the store employee was actually trying to save her money. If the employee had allowed her to buy the sim card, she would have found that it didn't work and likely wouldn't have been able to return it, either.