I received a Viber call and told that I had won 50,000 in a Changi draw.
i was advised that I had been sent a OTp number - A number arrived from a My Singtel number, i was asked to supply it

I was asked for my IC number and bank account number to send the funds, I asked for the location in changi i could go so i could do the activity with the changi Rep and that i never give out my ic and account number over the phone.

i was passed to a "supervisor" that sent me another otp number this time from an itunes account
i was asked for my ic and bank account number again, i repeated i would go to changi to fill in the paperwork and i don't give out my details over the phone.

they dropped off the call - i am guessing i might not have won 50,000 in a lucky draw !!!