Your Complaint does NOT constitute an FIR. For Lodging an FIR the traditional system of lodging it at the police station prevails.
The Ahmednagar Police insists that people should refrain from lodging false complaints as it is an offence and is punishable by the law. It must also be understood that complaints can be tracked and people who lodge false complaints can be booked under the following provision of the law. As per Section 182 of Indian Penal Code 1860, whoever gives to any public servant any information which he knows or believes to be false, shall be punished with imprisonment of either description for a term which may extend to six months, or with fine which may extend to one thousand rupees, or with both. As per Section 211 of Indian Penal Code 1860, Whoever, with intent to cause injury to any person, institutes or causes to be instituted any criminal proceeding against that person, or falsely charges any person with having committed an offence, knowing that there is no just or lawful ground for such proceeding or charge against that person, shall be punished with imprisonment of either description for a term which may extend to two years, or with fine, or with both; and if such criminal proceeding be instituted on a false charge of an offence punishable with death, imprisonment for life, or imprisonment for seven years or upwards, shall be punishable with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.