An insult to all Batvillians

I live in an inner Melbourne suburb. I am female. I work in the CBD. I am originally of pale Anglo-Celtic stock. Ergo I wear a lot of black.

There are three supermarkets in and around my suburb. Two of them stock "Dynamo Dark Clothes Wash" which is perfect for keeping the dark side suitably muted. The one nearest to me does not. Why? They are all the same chain. Arguably the one nearest to me is also the most edgy or is at least closest to both the student housing and the clothes shops . However, if I want to preserve my blackness I must traipse to one of the other supermarkets.

Why this local anti-black bias? It is an outrage

Question - If Melbourne was nearly called Batville (and Batmania) is it correct to call Melbournians "batvillians" or "batvilliagers"?