For those of you who are looking for ways to file consumer complaints against those who are negligent in their services or goods. The West Bengal government has recently launched an online complaint portal that will help them to tackle such complaints effectively.
You can now file complaints here: https://wbconsumers.gov.in/ProtectedPages/con_login.aspx
Here is more information about how to register on the site before you can file complaints. https://wbconsumers.gov.in/document/How_to_lodge_complain.pdf
Key numbers are available here: https://wbconsumers.gov.in/HtmlPages/dept_mapwise_contact.asp