Filed a mental harassment and misbehave against office senior now internal complaint committee is bi

I am a female employee currently pregnant at final stageof prasar bharat doordarshan I have been regularly bullied and harassed by my senior recently he made unparliamentry remarks on my UTI over phone call but I don't have recordings neither any of my office colleage is supporting me now he has started threatening me by his body language as he holds a powerful position The first complaint I filed on 5 th August the ADG admin of my office was not entertained now on 26 of August I escalated the matter to Secretary Min of I &B and copy send to national comission for women and CEO prasar bharat then they constituted icc and entire team was biased they denied every charge also didn't allow me to call my witness and threatened me to have severe implication if I call witness they forced me to get a proof of every charge made in complaint but the fact is nobody is going to support me except my previous boss who has retired in March to whom I have made verbal complaints several times and my section colleague ( female) who has also made a different complaint against the same person .