Yeah me too but it's not the first time and I guess won't be the last; what's fortuitous is that it didn't end me and I'll get around it.
It's good practice to walk away from those who do us wrong and I'm one who, once trust is lost or the harm is done, will never allow that person back in, certainly not in the same way as previously. The degree of the shutout is dependent on the damage done.
I'm not one for karma, I prefer positive action, but for sure I understand what you're saying; those who live that sort of life sort of attracts the same.