Mental and psychological harassment at work place

Can I complain about an officer for his misbehaviour 6 years after the last incident?? This officer had been biased against me and intimidated and bullied me into doing the work of a lady whom he was favoured since year 2014. My harassment started the day I refused to take on more responsibilities of the section and asked for a work distribution between her and me. A series of incidents followed where he made fun of me and tried to intimidate me so that I ask for a change of section. I stood my ground against his misbehaviour only due to the support of a lady officer who reprimanded this officer and asked him to behave. But in 2016 year end this lady officer got posted to other section and then this officer started buttering the new lady officer to keep himself in her good books and started poisoning her against me and with her support created such negative atmosphere in the section that I myself had to tell this lady officer that I am unable to work in such vicious atmosphere. Instead of making him understand she changed my section. And now this officer has been made the incharge of the current section I am working in. I am finding it increasingly difficult to work with him leading to bouts of anxiety and anger in me. He has been putting up a farce of a very nice officer infront of other staff members making them say that he isa nice person and his voice is a bit on high side and that I have overreacted, I know the real person that he is having worked with him for three years from 2014 till 2017. This male officer, the lady staff whom he favoured and the new Lady officer of our division are all reserved category employees. What should I do?? I definitely want to complain. I did not give a written complaint in 2017 thinking about what further harassment I will have to undergo as the Lady officer was a member of the Internal Complaints Committee of Sexual harassment of women at workplace. Mine is not a sexual harassment complaint but I have suffered the worst kind of humiliation with the intermittent incidents of shouting, bullying and sarcastic personal comments by this officer. I had this concern that nothing would come out of my complaint and I had a family of small children to look after and my husband had his own medical problems. Had there been repercussions for my complaint I would not have survived further mental harassment. Please suggest whether I can complain now as I want a change of section for which I am going to give a letter but again I want to give a written complaint about my ordeals of so many years as that Lady officer is no more head of our division and also no more a member of the Internal Complaints Committee. Please suggest. Thanks & Regards.