Indian OTP Phone & Email Security

I want to harden my telephone and email channels, both of which rely on one-time-password flows aimed at Indian users. To do that, I need a security professional who can act as an ethical hacker and carry out full penetration testing against the current OTP mechanisms. Experience with Indian telecom infrastructures, local SMS routes, and common email providers used in India is essential, because the test environment must mirror what real customers see.