In case the investor is not satisfied with the redressal of the Portfolio Manager or otherwise the investor may lodge the complaint with SEBI’s web-based complaints redressal system (SCORES).
https://scores.sebi.gov.in/userregistration

For Android App:
https://play.google.com/store/apps/details?id=com.sebi

For iOS App:
https://apps.apple.com/in/app/sebiscores/id6478849917