Being responsible for what you, think, say or do and the consequences of those can really set you free from a lot of stress and anxiety. My own personal view is that we should really be taught the skills to help us think our way out of problems we create for ourselves mentally. Often it’s our thinking styles that have caused this, like over thinking, ruminating, negative mind chatter and our limiting beliefs.
There are those adults who use blame, spite, nastiness, and other very mean ways of deflecting their lack of responsibility onto you. Somehow or other they feel justified that its your fault, they childishly refuse to have a reasonable adult conversation with you to sort the problems out.
When someone lashes out so much nasty vitrole at you, it’s time to walk away. They won’t change, they won’t ever see they did anything wrong. This sort of self-gratified drama is one you can do without. Keep the door to this relationship closed. Period. If they feel you are their persecutor, real or imagined, there will be little chance of that relationship will ever recover. We should all learn not to take things so personally, more often than not it has nothing to do with you. Anger, frustration, helplessness, a lack of control can be some of the reasons behind this toxic person behaviour. Of course that’s no excuse, they will simply move on and find someone new.