Three things become clear once again. We need laws making it illegal to fail to provide a detailed reason for serious actions like this. We also need a complete reworking of the system as it is.. and likely a new official means for payment transaction services in general. Finally, and particularly in the context of digital money, we need laws ensuring bank/CC/PP neutrality. Just like water, gas and power. Financial services are just as fundamental and vital. If we can underwrite, back up, protect and bail them out, then they shouldn't be able to pick and choose or play favorites.
Additionally, almost forgot to add. We need the government to stop treating financial institutions like they are law enforcement. I can't think of any other field, product or service where private or even semi-private actors are expected to actively play a roll in fighting crime, with actual legal stakes if they fail or don't play along.