Government officials will never ask you to transfer money or disclose bank log-in details over a phone call.
Call the 24/7 ScamShield Helpline at 1799 if you are unsure if something is a scam.
http://s-one.internet.gov.sg/mti/PS%20at%203rd%20Qtr%20QES%20on%2019%20Nov%2009.mp3