Airtel — wrongly charged

Address: Chennai, Tamil Nadu, 600096

Dear sir

My mobile number [protected]
My december month bill i charged from airtell 118 rupees extra. It'd cleared in a bill in a name of late fee charge i paid a bill before one day to due date it's reflects in a bill also but airtell charging me extra and airtell promising me extra 100 rupees discount of previous month extra charges in this bill but i am not received this discount but reflect in a bill i contacted customer care also but nobody response.
Please help me

Karthik
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