Airtel — internet not working properly

In 12th august, internet was not working on my airtel number despite full connectivity. I suffered a lot because of it. But the problem was solved by network team after my continuous calls to the customer care.
But from 12th september exactly after whole month, the same problem arose and making me disturbed again. Customer care have again proven to be ineffective and giving their unhelpful suggestions. I need instant solution to my problem.