Madame Marissa found out her slave had lied to her. He had thought there was o way he was going to find out he had lied but she did. And the punishment she gave her was brutal. She crushed him and kicked him and trampled his head painfully. She even used her feet to try and strangle him. The slave was humiliated and in pain but at least he had learned his lesson.
Mistresses Joss and Sonny are always there for each other. When you mess with one of them you mess with both of them. This guy tried to con mistress Sonny and they hunted him down and trampled his head so that the pain would get into his head and make him stop being a conman. They tortured him till they were satisfied he had learned his lesson and would not do it again.