Sirs,
In India, or all over the world, no one can escape from the Investigating agency, which have name in India POLICE.
Policemen are also humans like us. However, if you think that, you got a bad policeman in front of you, that is equal to facing victim of Road Rage in the hands of Goondas or facing cruel ragging in your college.
If you/ your relatives are willing to be honest in giving Disclosure Statements, no Investigating Agency in this world prefer to torture you. The moment they know that u r telling the true and complete statements, they will file the "Final Report", and send to the Magistrate court, and proceed to investigate the next case.
However if you happen to meet a bad policeman, after satisfying with incidents (not your intuition or guess, but solid incidents - your only statement is sufficient to presume the Profeciency of the Policeman), that he is not after disclosure statement, but also money, to harass you; you can proceed to his Superiors and Court. At first the Magistrate court, then to High court in writ petition.
If the superior is not responding, at the earliest, write to Human Rights Commission. I think there is a limitation of 1 year.
Please do not think that, said policeman will loose job or will be transferred with the first complaint. Normally now the Police Establishment will come to know that u r honest in your Disclosure Statements. That is the end of the matter.
Remember to write all the truth and incidents - any link forgot or neglected to write, will never be allowed to "amend". No after-thoughts or second thoughts.
Regarding the Police's compulsion to call you back to India, in some cases the Policemen keep relatives of the accused in the PS illegally, to compel him to produce in the PS; i have nothing to advice - any way u r also duty bound to appear before the Investigating Officer, to give your Disclosure statements.
Wish you all the best. When you go out of the house, no one know will some wrongly jump infront of you, or hit you from back - in both the cases there is an accident.
Regarding govt establishments also give this much margin, or you cannot breath in this world.
Wish you all the best.
Ramanathan2108@gmail.com