My question involves defamation in the state of: CA
I worked for a small business out of their house doing personal assistant type stuff and helping the owners move into their new house. It finally got to be too much work so I quit. When I quit they never paid me my final check and it took action through the labor board to finally get the money owed to me.
For several months after I had quit the owners would contact my brother and friend's and tell them I was a terrible worker and other stuff. It finally got to a point where I drafted a letter telling them to stop and it stopped briefly but now started back up again even worse.
I heard from my brother that they had called him today saying I had stolen items from the house and that if I don't return them they will sue me. I did not steal anything from their house and the items in question I guarantee are still somewhere in their cluttered house.
Is there anything I can do to get them to stop?

