We are all on the same side. The goal is to help. Let's try to avoid to get personal. If one doesn't like what someone wrote, just ignore it/him.
I'm afraid police won't intervene, like forcing Mbank to pay. Their goal is to keep the peace. At most is would be possible to make a criminal complain, but it would be for the prosecutor and then a criminal court to decide if any crime was committed.
If many people join in, it won't be a petty case, it will involve many thousands of euro. I bet some people lost real money with this.