BSNL
Change of Name

I have a landline number of BSNL at my home under plan 150 against which I have also issued a Broadband connection. This phone is issued in my uncle's name who is currently not using this phone & living outstation. He has already authorized me to use this phone with a written letter. Now I want to change the owner's name of this phone from my uncle to my name. I show this authorized letter with a last bill copy to BSNL officials, but they are not entertaining me. I also mailed to many authorities of BSNL by mail but no reply so far. My landline no. is 232433 in Barnala city (Punjab).