Airtel — No proper response from customer care

Address:

Tiruchirappalli, Tamil Nadu

I got a service message from airtel stating the availability of an Rs.44 ISD recharge. (ISD calls 1re/min)
Recently I made an EC recharge for activating an ISD booster in my prepaid SIM . The recharge costed Rs.44. (ISD calls for 1 rupee per min)

In 2 minutes I got a confirmation SMS that the Recharge has been done successfully.
but when i made an ISD call, it costed Rs.9.80 per minute.
I immediately called the customer service., they say that the recharge has not been updated yet. They even told me to visit the EC recharge retailer and get clrified from him. I even went there and asked him to call the "service for retailers". he did that, and they have told him that it'll get activated in ten minutes. (then why the hell did i get a confirmation SMS in not more than 2 mins)

again, I made the ISD call the morning after.
BUT WTF, still it has not been activated.
I've been calling the customer care for 3 hours till now. STill thery're not even attending the call ..

I want someone to heed to this problem immediately.
Thanks in aadvance