The only we could solve their problem is by torturing them since all efforts to stop those bastard from sending and posting false job vacancies prove abortive.. They send you messages to come for interview when they have no Job to offer you. Let's joins hands and beats them up I think with these they will know that Nigeria youth are very much dissatisfied with their behavior rubbish people.

seconded

lol.....

Thirded.. . I will donate petrol

Nice one Op, I have been wanting to suggest this with all shady methods. Since they are not sincere about what they do, thereby advertising non existing jobs you guys should deal with them, so they can put an end to their jobs and hawk it on their head by themselves.
Just make sure you don't cause bodily harm. Cheers.