Please suggest me wh

As I arrived in Saudi Arabia three months before on professional visa of civil engineer .My company has no of problems in fact the name must be problem because they kept two months of salary on hold , no over time at all , working on Fridays also ,neither received any full salary , no emergency leave in two years .I find my self in jail and have lost all value of profession because nothing is going smooth .Even the employer don't care about the medical and emergency related issues   ,they don't care if the person is dying .No salary on time after one and half month gap ..over all mess here .Totally exploiting and force work and also iqama not issued ...Starvation prevails at sight .please help