Cunning deals of replca keys

Very bad experience with them in a simple process of obtaining a remote spare key for my vehicle . It was paid for up front , they could not make the key and after eight months of promises and unansweered phonecalls I eventually asked Niël to just reimburse my allmost three grand . He agreed but to date I have received no money . After numerous calls to Sylvia (mother) , still nothing . Which way should I go ???