Today I called the BSNL call centre to ask the same question, dialed 1503 and then pressed 1 for 3-4 times and then after waiting 7-8 minutes one foolish lady picked up the phone, did not understood my question first and kept me on hold for another 3-4 minutes telling I am checking in the system and then answering there is some fault in the system and she'll again callback (which these hopeless people can never do), I again tried explaining my question (before she ends the call in her idiotic line as, - thanks for calling bsnl, appka din shubh ho, jo inko call karne k baad kabhi nahi ho sakta) and then after understanding (I still don't know what she understood) she simply answered there is no such option.JFYI don't ever call these hopeless, foolish, ass**le customer care at 1503, they will once again prove how government call centre work and what they really are, the result will only be you kicking your back and saying - why the hell did I called these fuc***g bas**ds. :wall: