Disgusting employer

My son was hired by wok n roll. No contract signed. Worked full week from 11am to 10pm. Was told to get an accommodation closer which he did. Today he was found using the phone and was told that he doesn't listen and got fired. Listen to who csuse no one told him anything. After spending almost R3000 on transport and getting accommodation. Wok n roll is the worst. I need advice on what to do, which steps to take