Bharat Sanchar Nigam [BSNL] — billing address change

Address:

Hyderabad, Andhra Pradesh, 500044

Dear sir,
Kindly change my bsnl post paid billing address in a new posting place. Since 1 year is running but the bill is come at the old address. So, kindly look into the matter positively.

Old address : 2-2-1130/7/1, new nallakunta,
Hyderabad telangana - 500044

New address : 2-2-1118/a/701, flat no.401, sreeman rajal's residency, st. No.8, new nallkunta, hyderabad, telangana - 500044