Bharat Sanchar Nigam [BSNL] — anonymous

Address:	623524
Website:	www.bsnl.co.in

Sir,
Someone calls to my land line number (Bsnl) from an unknown number and talks rubbish to my mother.. She tried to disconnect the call after the 1st time.. But, this person keeps on calling, even after we said that we would log complaint against him.. It does n't looks like a mobile number...
Please give me the details of the number or suggest me the steps that should be taken in order to stop this nuisance.
The number is 00401000

My contact details:
Irfan ahamed
Mob no: [protected]
E-mail :[protected]@gmail.com