Airtel Postpaid
Unexpected bill

I am having a postpaid connection of airtel (9871715880), for the month of nov my bill amount is rs 1249, which is very unexpected for me ..according to me my uses is arround rs 700-800.. and this is very unfair. i m not going to pay this bill, i want mah connection to be cancelled and i have already paid rs. 998 so only money i ll pay is rs 1249-998=251...