You can make a complaint to the police. They will further investigate and take further actions. You should have enough evidence yourself against the ones who are making false certificates. Section 197 of the Indian Penal Code, 1860 taks about issuing and signing of false certificate. It says that whoever issues or signs any fake certificate which is required by law, knowing or believing that such certificate is false will be punished for 3 years imprisonment or fine or may also be liable for both. The punishment is same as in giving false evidence.
It is illegal to present fake degree certificates and transcripts as genuine documents. Under the Fraud Act 2006, it can result in a prison sentence of up to ten years. Those who possess such fake degree are charged under Section 420 (cheating), 467 (forgery of valuable security), 468 (forgery for cheating), 471 (using as genuine a forged document) and 109/120B (abetment of criminal conspiracy) of Indian Penal Code (IPC). They will have to face seven years of imprisonment.
In one of its recent judgement, the Supreme Court of India has pronounced that an appointment secured on the basis of Fraudulent Caste Certificate is void ab initio and Government Resolutions and Circulars cannot protect such appointees.
Reference: Indian Penal Code, 1860
Fraud Act, 2006