International Calling Rates on Airtel

I called Airtel 121 from my Airtel mobile in New Delhi and enquired from the agent about the international call rates for Australia. In the first instance, instead of providing me the information, she adviced me to get the rates by sending an SMS (toll free). I retorted back saying that since she was on the phone, she should provide me the rates first. She said alright, kept me on hold for over two minutes, and then told me that the IDD calling rate to Australia was Rs 6.40 per minute.
I then asked her to give me the information she wanted to give me in the first instance. She said that I could get the IDD calling rates by sending an SMS 'RATES' to 121. I thanked her for the information, and she said 'एयरटैल में कॉल करने के लिये धन्यवाद ' ('airtel maen call karne kae liyae dhanyawaad' ie Thank You for calling Airtel).
I then sent the SMS 'RATES AUSTRALIA' to 121. Within a minute I got an interactive SMS asking me which operator I wanted, Optus, Telstra, or Vodafone. Absurd, I thought; when I call IDD from India to Australia, I do not have any control on the carrier that will service my call. For curiosity sake, I replied with the option number for Telstra.
I then got an SMS advising me the rates. Great ! except that ... the rates being advised were the International Roaming Rates, ie rates applicable if I took my New Delhi Airtel mobile to Australia, and used it there to make calls in Australia, by latching on to the Telstra network. Whereas, I had asked for IDD calling rates from New Delhi to Australia. 
Clearly, the SMS did not provide me the information I had asked for.
Had I not insisted to the call centre agent to give me the IDD rates on phone, I would have had to call the call centre again. Having to call again really puts me off. I congratulated myself for being insistent and avoiding the frustration of havingto call again. However, I was a bit sad - great technology, great service idea, but wrong data.
If anyone from Airtel is reading this, please do correct the anomaly. When your customer asks for IDD calling rates, do not advice that he can get them by sending SMS 'RATES' to 121.