Airtel prepaid card
Un-necessary charge of amount in prepaid no

Un-necessary charges of my prepaid no. which i cannot subcribe anything. when i call to customer care no. 9815098150 airtel tone told me to call 198 no. then when i call 198 no. they told 121 no. and they said to call 198 no. i cannot understand to this which i called to no.

So, Sir tell me the toll free no. of coustomer care no. which i can talk to coustomer care office