[Resolved]  Airtel Caller Tune Subscription — Fooling us on caller tunes

Hi,
I am using the mobile services from Airtel. I am paying 30 Rs for the caller tune. I want my caller to listen a song, when they call me. But Whenever anyone calls me they get the advertisement from airtel saying "If you want to use called party ringtone as your ringtone press *". by the advertisement is over i picked up the call. What i need is either Free Subscription on Hello tunes or Advertisementless paid service