Consumer Redressal

Hello Sir/Ma\'am, I have a mobile no. 9038025800. Earlier my service provider was TATA Docomo. I have opted for Mobile Number Portability and had ported out the service provider from TATA Docomo to Air-tel in January 2014. I had cleared all the dues of Rs 1111 , Payment mode Via credit card. I have the card bill copy to prove that. Now since 19th March 2014 my out going call facility has been barred by air-tel saying that I have a due amount of Rs. 1107 to settle down with my previous service provider, i.e. TATA Docomo. I had contacted to TATA Docomo via mail and got the confirmation from TATA Docomo that I do not have any outstanding amount which I need to pay. I have forwarded that mail to air-tel but air-tel is not activating my services. Pls look into this matter at the earliest as my work and my personal life is getting affected severely due to service disconnection of my mobile no 9038025800.