Only one.
This is a true story, BTW.
My husband worked as a construction laboror for a very abusive man, for over a year.
My neighbors had a son whom they neglected and the parents wouldnt work, to support him.
We pretty much took him in, and he spent alot of time here, ate here and played, and we included him in our family outings.
Last year, Christmas time was approaching, and hubbies boss needed extra help on a project, so I suggested the neighbor.
Neighbor worked for two weeks, and talked hubby's boss into ''replacing'' him.
My husband was devastated, we were left destitute.
Wife, is justifiably pissed off, and ambushes neighbor on a snowy evening.
I made him back up two miles of road, while cussing, and calling him all kind of horrible names.
To this day, I will not lend them a hand, in fact, the animosity was so severe, they moved. Good riddance.
To repay evil for good is the most. There is nothing worse. Nothing worse.