Airtel — complaint for airtel fake commitment

I port my number vodafone to airtel services last month.
While porting number executive commited for 349/- plan but the plan applied is 399/-, i have screenshot of conversation which i m attaching for your reference, the number from which i received call is [protected].
I went to airtel gallery for solution but they said 349/- is postpaid plan, there is no such prepaid plan available in prepaid,
That means i received fake information from airtel team, and now the number is not reachable, why should i pay 399/- if i choose plan 349/-
I sent mail to airtel [protected]@in. Airtel.com email id but no reply received yet

I am seriously irritated with the airtel network.