bad network servicing to customer

Location/place: kankavali

Name of company/service: AIRTEL

SIR, I am Nandan Salgaonkar and my Airtel Prepaid No. is +917276391073. Sir I had PORT IN this No. From VODAFONE PREPAID To AIRTEL PREPAID SERVICE. BUT this NO. is not registered On my MOTHER’s Name:GEETA GAJANAN SALGAONKAR. when I checked details I found This NO. is Registered on Name: Suhasini Madhukar Kadam. This was bad registration.I use this SIM NO:+917276391073 regularly. BUT yesterday. suddenly it showed on my mobile ” SIM REGISTRATION FAILD” message. When I called to AIRTEL CUSTOMER CARE then They didnot give me response properly. Sir, Please solve my SIM CARD registration and ACTIVATION PROBLEM.