+65 9424 83xx called me to warn me that 18, 19 users from overseas were using my internet connection. The person on the other line told me that they are from Singtel and need me to perform and verify some information on my laptop or mobile phone. at the same time asking more information about where i am located in singapore. which other telco am I using, other than Singtel. 

I needed to talk to someone and get this quickly across as the scammer (female) person direct me to another male senior technician from singtel (claimed) to dig out info from me but failed.

Many will fall prey to such scare or threaten tactics used in these scams. The unbelievable thing is that the scammer I spoke with proudly admitted before hanging up my call that there are many ignorant people in Singapore willingly to give money to them as they simply believe their words.