How can we file a complaint for contract breach in India?

We are a UK-based company seeking legal assistance regarding individuals in India who were issued offer letters and contracts by us. These individuals have violated the terms of their contracts and misused our documents without consent, engaging in fraudulent activities and manipulating these materials for unauthorized purposes. This not only breaches their agreements but also poses significant legal and reputational risks to our company. We wish to file a formal complaint and take legal action under Indian law. Specifically, we need guidance on filing a complaint against the involved parties, taking action for breach of contract and document misuse, and implementing preventive measures to protect our interests. We are ready to provide evidence and discuss your terms of engagement. Please advise on the next steps to proceed.