doctors who cheat you.

Has anyone here experienced fellow doctors who cheat you in pfs? for instance paparelieve sila mag popost ng pf lets say 300/hr (which is btw sobrang baba) pero ang totoong pf na narereceive nila doon is more than what they declare sa mga job post nila? parang ang ngyayari may mag rerelieve for them and kahit na di sila pumasok may cut pa rin sila (passive income for them). how do you all deal with these kind of doctors?