As far as the post for contributors let me translate: "Deal with it. In the meantime if you'd like to let some steam off send us an email. We have a variety of prefab responses that might make you feel like we are listening. Although conveniently current technology doesn't require a human to actually read your drivel."
yes, shutterstock has bs responses that are canned.
more effective is to:
a) contact the media and tell them what a predatory company they are being in time of a crisis for most people.
b) pull your portfolio, or at the very least de-activate it.