Airtel — broadband connection bad service

Website:

Airtel.in

I have applied for a broadband connection and paid the advance rental for 6 months on the condition that i would get the connection within 24 hours. The sales team of airtel contacted me at least 10 times before maybe the payment
Once the payment was made there is no one is picking the phone and even after 48 hours no one from airtel contacted me.
I sent a mail to airtel customer support for which i received no reply.
The sales people are not picking the phone no matter how many times i am making the call
Moral of the story never ever pay advance to airtel they are