Airtel — paid for broadband never installed

I opted for broadband connection on 7th june and the very next day the airtel representatives were at my home to take my money. After some documentation i was told the maximum time to install the connection would be 4 days, but now it has been 1 week and the guy who came to take the money wont receive my calls the airtel customer support keep saying "please wait another 24hrs and it will be surely installed". It has been going on forever now and i need help with my issue.

I have call logs and recordings of my conversation with the customer support saying that "sure go ahead and complain to the consumer forums"

I hope the consumer forum can help me with my issue as i am a student in urgent need of an internet connection for my assignments and online classes.