BSNL POSTPAID — SIM block

i have been trying to block my SIM which i lost yesterday but unable to do so.the caller is calling allthe numbers in the phonebook and harassing us.repeated calls to so called "24365" is useless.the people of BSNL customer service can not speak well they do not know the procedure.
please help me out in this regard.unfortunately the card is postpaid.
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My postpaid BSNL sim is Blocked.I require its PUK number .My phone Number is [protected].Kindly Mail
the PUK number of my sim on e-mail address defined above.
My postpaid BSNL sim is Blocked.I require its PUK number .My phone Number is [protected].Kindly Mail
the PUK number of my sim on e-mail address defined above.

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