Its actually very hard to prove his guilt as evidence and witnesses are required in prosecuting him. Don't believe me just see the outcome of this case. And also do remember this is Malaysia "Boleh". The best that you could do is just give him a good spanking (if you dare).
Why do people get conned in the first place? Simple just because they are greedy. To you gullible minds out there, just remember there is no cheap lunch in this world let alone a free lunch.