Airtel
Alance deduct

Sir

my phone no, 8130432908

i have activaated rs 18 gprs plan o. my phone after activating my balance was rs 720 i used internet on 17 march after some time i checked gprs balance was 5 mb left and my account balance got deducted to rs 63 aa sum of rs 660 was deducted from my balance from without any reason. Pls refund mybalance as soon as possible . i need it urgently thanks in advance