It sucks that there are losers out there who deliberately choose to take advantage of other people. I've been dealing with one of those for the last 3.5 years, not quite to the scale of what you've been through, but the stress is real. I had to deal with over six months of stress literally hanging over my head wondering whether my roof/ceiling would collapse, then being unable to use my kitchen/living room for two months, and then the other owners of the building refusing to pay for part of the repairs to the building. Now I'm dealing with another loser trying to steal my parking space.
I'm worried about the physical effect of the stress that he went through and what that has done to his longevity.