Trai — airtel postpaid fraud billing system and poor network

Address:

Pune, Maharashtra, 411036

I was using airtel postpaid service till july 2018. I was paying bill on time also. Due to poor network and call drop i ported my number in idea on same month. After one month i got a massage to pay rs. 478 to airtel. That containv 378 usage and 100 rs. Late fee. I agreed to pay 378 and paid on 3 sep 3018, but not paid 100 for late fee because i didn't received full and final bill by airtel and notification about last date for bill payment.
Today my outgoing service is bared by idea on request of airtel for that pending amount of rs. 99 and i am facing problem with this activity and loses my business also, because i am not able to call anybody.
Now sir, my concern is, if i not received any bill for pending amount then how can i know the amount to pay particular operator. Even i was also not aware about the last date of that payment. They send me bill on 1st september 2018 and last date of bill payment was 8 august 2018.

Now you are requested to look into the mater and requested to do the needful.

They are frustrated and charging unusual money to run their company.

Kindly help.