refuses to return my money

He says in his ad on internet he refunds you if you are not satisfied, each time you see him he aks for a substancial amount, nothing he promises transpires and now refuses to refund my money as promised. These people should be locked up and not be allowed to operate, he picked the wrong person, hope this helps a lot of peope out there, they operate to swindle you and that's how they survive, stealing from others and doing great harm to people. Mangi operates  with a syndicate of others, live in posh houses in the northern suburbs of johannesburg and he owns 2 latest bmw's silver and dark silver, x6 and x5 models, and Mani operates from different towns around Gauteng and other provinces, hires rooms for rituals, pays people bribe money to do so, black people, (he is black traditional healer) at the cost of people like myself to enable him to afford his scams. He wi pay the price for his scams, he picked the wrong person and will not ever let go till I'm refunded of my money he took. There has to be a law against these disgusting people.