[Resolved]  Airtel Prepaid — recharge by credit card

Sir,
I recharged my No.[protected] from my citi bank credit card.My No. is life time ,whenever I get it recharged from retail outlets ,only service charges @ 12.36% is deducted,but when I got it recharged from my credit card for Rs.324,I got the talk time of Rs.159,which seems to be very unreasonable as my no. is life time,when I talked to customer care I was told that it is companys policy to deduct the processing charges and service charges on every recharge from ATM or credit cards and further that I have got a validity for 15 days.Rs.165 was deducted why?when only service charge should have been deducted on all life time no.and the question of validity does not arise on Life time no.
it seems to be very unreasonable ,the co. with so much reputation ,is charging different rates and so much difference is there,Kindly see to the matter .