Can you, like, anonymously report them for failing to meet the legally mandated requirements?
I'm half-convinced, for real, that everyone who doesn't live with a disability of their own or a loved one with a disability (by which I mean an access-impeding disability) should, at some point, be given an unstable ankle fracture. It heals - eventually - but you get a solid couple of months of Mobility Is For Other People.
You know I've always been in favour of accessibility for everyone, but I still didn't truly understand how messed up this stuff is until I spent a few months unable to walk, myself - and Perth is pretty good at accessibility, and I rarely actually had to leave the house to go anywhere but the hospital. (Unsurprisingly, the orthopaedic wing and clinic at the hospital? Wheelchair access provided.)
These idiots would learn to stfu and make with the access if they'd had to deal with it themselves, I think.