Department of Telecommunications (DoT), Ministry of Communications, has issued an advisory to citizens to not to take fake calls being received by the citizens wherein callers are threatening to disconnect their mobile numbers, or their mobile numbers are being misused in some illegal activities. The DoT had also issued advisory about WhatsApp calls from foreign origin mobile numbers (like +92-xxxxxxxxxx) impersonating government officials and duping the people. Cyber criminals through such calls try to threaten or steal personal information to carry out cyber-crime/financial frauds.