Airtel — airtel prepaid issue

Address:

Rangareddy, Andhra Pradesh, 500060

Respected sir i have applied for porting from docomo number [protected] to airtel. I got around 20 calls from airtel executives to port my number to there network bcoz docomo is going to quit. Later i agreed and airtel executive came to hand over the sim.. On phone he told no charges for postpaid af, but later i asked for prepaid he told he told that i should pay 440 rs for prepaid sim... Then i paid d amout but after activation of my airtel sim i came to know it was postpaid. I should pay due amount to get it convert to postpaid.. Seriously how cum you can cheat a person.. I felt so disappointed.. Can it is possible now to refund my 440.. As far as i know no network is charging money for porting. Please let me know... If there is charge for porting then please dismiss my complaint