Airtel Landline
Billing for surrendered telephone line

My sister in law had the telephone landline at chennai saidapet, who supposed to go abroad, so surrendered the phone. But till date they had taken the minimum billing charges every month.

If asked for query, their reply was not satisfactory. They had made the mistake by not deactivating the number and charging in customer account. As the credit card debit is provided, we came to know later on only.