Just a word about lawsuits. I worked for a First Nations group that has some legitimate grievances with our government. They were also ripped off by a builder. Following the "laws of the land", they correspondingly started legal action, on both fronts. It is many years later, there is still no (justly deserved) money in their pockets, and if this is all they had worked on in the intervening years, their community development would have stalled.
Thankfully, they have visionary leadership and while these grievances festered, they also set up enterprising social programs and business opportunities. The community is much better off because of this initiative and enterprise.
I guess the lesson I take away from all this that even a deep grievance, after the dust has settled, is best put aside for living. This sort of misery can bury you.