On the issue of unsolicited and intrusive telemarketing voice calls being made to mobile phone users across the country by telemarketing companies, one should weigh it between intrusiveness and disturbance, vis-a-vis information-sharing. It is well known that e-mails and text intrusion, though not a happy intrusion, are far more acceptable than telemarketing voice that land up in the middle of nowhere for credit cards, insurance and a host of 'push sales'. It is these calls that need to be strongly condemned. Telecom operators should not allow such intrusion into the lives of mobile phone users.
While it is acknowledged that communication and selling media should not be blocked for usage just because some of the glitterati do not find time to put their numbers into the NDND (National Do Not Disturb) registry, the system is not able to block by design such intrusion into their privacy. However, despite this, a few instances of Spam could still come in. However, as long as it's not a voice call, but an e-mail or SMS, the degree of disturbance is far lower.