Airtel — got a bill which is exceeded my postpaid plan

Address:

Kolkata, West Bengal

Hi,
I took an airtel corporate connection in 2016. The plan was of 256rs. First of all without taking my consent the plan was changed after a year to 265. Thats okay, i accepted that. Now this month i got a bill of 324rs. May i know the reason? I have nit used the entire data and hardly made 15 calls in a month.

I need proper justification and action else i will cut this connection.

Also i would need the bill to be revised.

Regards
Prienka bakshi
[protected]
Email - prienka. [protected]@gmail.com