Airtel the Worst Internet service provider...

Airtel is one of the worst internet provider in India as they are least bothered about to resolve customers issues and never update their system for any issues raised by the customers regarding the services provided by them.
I had bought Airtel USB DATA Card in the month of January for Rs1799+500 Activation charges the service was so pathetic that net use to get disconnected after every minute after making N no. calls to the customer care center (121).
I always use to get the assurance that our technical person will contact you within 24-48 hours but still i haven't received any call. so finally i had decided to discontinue the service. So all people out there just beware of such fraud company like Airtel