Alistair Naidoo and Quinita Naidoo took my money and never finished the job

This company installed cctv cameras and security beams at my house but never finished.Alistair Naidoo and his wife Quinita Ronel Naidoo took my money and run away.when I called Alistair always says he will come and finishes the job since June he has been saying one and the same thing till today.