Rental money not given to the owner of the house.

My name is Nokuthula Mashabane I have been given a reference of Allan Lewthwaite for rental . Mr Allen advertised the house and he managed to secure the Tenants. After securing the Tenants he took the deposit money, money for keys and money for first month rent from the Tenants. He didn't communicate anything to as the land lord . At the of December the Tenants paid him again money for rent and he disappeared with the money. I have made a contact with him, he's ignoring my phone calls , I have sent him messages he is not answering them. He took my close to R150000 for my house and disappeared with all of it . Allen calls himself a registered Estate agent and this is how he is treating his customers. I need help and I want him to give what it due to me . Allan rent out my house as an agent and enriched himself with my rental money.