We've got a very narrow area to drive through in the car park and yet people still park there cos it's next to the exit, making it about half a car width wide for other people to navigate. I understand having trouble walking over to the car parks (I am disabled) but you can't block traffic like that, it's dangerous and I'm pretty certain it's illegal, so stop. We have disabled parks for people who need them. Don't block the only way for people to drive in and out.
I would just start calling the tow truck in front of them. And I have.