Airtel — simply deducting the balance

Hi

Regarding my mobile number [protected].

Rs.446 recharge has been successful on oct 4th and transid is[protected], according to the plan i should get a free 75 mins outgoing calls to india from usa, but when every i call to india amount is deducting from balance not from free call. Please can you help me on this. I spoke with customer an there is no help from them