Finally, one day i began getting SMS's that I was being re-subscribed to some Hindi tunes or poetry. When i called up I was told they had been charging me a rupee a day for 2 years for this service.
Funny thing is that even if I had subscribed, I never got anything. So they charged me everyday for something they were supposed to send me, but never sent me.
They do the same thing on the internet, where they promise you some bandwidth (speed) but never deliver. After the allotted 10 GB my speed is supposed to half. But it comes down to a crawl. After i touch 80% of my bandwidth, every time I open a URL i am taken to airtel's page to buy more bandwidth. This goes on an on. (To be fair , this harassment has reduced recently, but they cheat you on bandwidth to get you to go to a higher scheme).