If you suspect a notary is acting unethically, such as notarising fake documents or engaging in land grabbing, you'll need to gather solid evidence before filing a complaint. You can submit an online complaint via your state's Chief Minister's portal. Alternatively, you can report the notary to the Notary Licensing Authority and the local police station with copies of the fake documents. Be aware that false accusations can lead to prosecution, so ensure you have concrete proof of wrongdoing.