Received several calls from these numbers over the last few days:

96136765: "M1" said my phone line would be terminated. Press a number to continue in English or Chinese.

90593358: "ICA" claimed my passport had an issue. Spoke to a man with a Chinese accent despite pressing "1" for English. After fooling around, he hung up.

88015219: "OCBC" bank said I had a transaction on my card. Pressed "0" and suspected the line connected directly to the bank. I provided a fake IC and was told to verify at the branch. It seemed legit as the lady professionally said the IC number and name were wrong.
There are more calls from these local numbers.