What's your petty personal boycott in Melbourne?

Is there a store or venue in Melbourne you refuse to visit because of some completely petty reason?

For me, I haven't been to a Red Rooster in 10 years after some old battle-axe at the Southern Cross store embarrassed me in front of a group of people by accusing me of using a stolen bank card, even though the card was in my name and the name matched my ID - but she insisted the signatures were different so it must have been stolen - still took the order though.

What's yours?