Whenever your complaint or grievance is not addressed by the concerned office like Electricity Board , Municipality, BSNL/MTNL, University or any such other public authority under RTI Act , within reasonable time like say 10 to 20 days, you can file RTI Application with the PIO / Public Information Officer of that public authority and seek information:

How can I file RTI for Complaint or Grievance ?

Identify the department to which your RTI Question should be sent:
Write your questions in the Application:
Ensure the Questions have clarity:
Pay the fees for your RTI Application as Per Requirements:
Submit the application: