eWebGuru — airtel postpaid charges

Airtel postpaid charges today morning i have recharged with 99 rupees for 28 days it said server is not reponding as we know there are packages for recharge i thought there is no active package for 99 . so i rechared with 448 ruppes for 82 days . both got rechage together from today . i called costumer care and asked them to make 82+28 days . she said its not possible . dear airtel please changes in your rules and regulations why should customer money waste for no use . its not 1st time for me last time i got 505, 448 rupees got activated for 90 days at once ... 1 recharge got waste for no use ...Airtel please make rules which customers and airtel beneficial