Trai has received support from CUTS International, a leading economic policy research and advocacy group, on its decision to impose heavy fines to operators on unsolicited calls made by tele-marketers.

CUTS Secretary General Pradeep S Mehta said, "In spite of registering for ''do not call' facility, consumers continue to be harassed by tele-marketers."

CUTS claims that its survey indicates that over half the mobile subscribers who have registered for the ‘Do Not Call Registry’ continue to receive calls from tele-marketers.

"The claim made by operators that they are not responsible for such calls is hogwash, because the subscriber data is sold by them to telemarketers and service providers," says CUTS.