Airtel — not sending unique porting code

Address:

Kolkata, West Bengal, 700065

I have been using my present no from 2003 and i am not ready to change my number. As i am getting very bad voice and data service from airtel for the last couple of months and not getting the problem solved after repeated complaints to airtel i have decided to port out of airtel. For the last 2 weeks i have been repeatedly sending porting requests to 1900 and following all the procedures correctly but i am not getting and sms in return. My bill with airtel is clear and i have been in airtel for the last 8 months but still i am not getting my porting code even after multiple attempts. When i called airtel customer care they are reluctant to help me in this regard. My no is [protected]. Kindly inform me if there is any other way to receive the porting code other than sms as i think airtel is blocking my porting sms or something like that.
Please tell me what to do to port out of this fraud telecom service called airtel.