Often enough we have seen some guys that are pretending to have connections to "betting mafia" members and offer games that are supposed to be fixed for amount x.

Obviously these offer are always a scam, nobody wants these games to be open to the public, that would only give the risk for the match to get investigated.

When they offer stuff like this they sometimes gave 1 or 2 games "for free". These are always just some random games. If the OP gets lucky and hits the right winners he will say "see, I told you so. Next games are not for free." If they lose the games they (which almost always happens) they just don't come back, at least with the account they used. They just try again some months later hoping somebody will fall for this nonsense.