Airtel — postpaid mobile plan upgrade

Address:	Raigad, Maharashtra, 410210
Website:	airtel.in

I got a call from executive rahul kumar explaining me to upgrade my plan to 799
I told will look into it without any verification or consent or proper confirmation call disocnnected quickly and then i received messege that plan has been upgraded.
Then i called air tel cu care and execute priyanka received the call and she took request for verification but no one turned up yet though as per executive complain was on high priority

This is really harassing from airtel withiout any confirmation or anything how can they cheat customers through spam calls.

Each month i ma getting huge bill amount though my usage is limit