Just because you’re talking to someone with an “ang moh” accent does not mean that you need to be cowed by him. After all, he might be nothing more than a petty thief…
Conmen seem to be taking this tact where they believe their accent is able to convince people into buying questionable investment products. I have already received 2 calls this year where they attempted to get me to invest in some “hot new thing”, but when I refused then they attempted some pressure tactic by throwing in some legalese and threatening to replay a previously recorded conversation to entrap me. Two times they tried this, two times I responded with an effective tactic: hanging up the phone.
Just remember one thing whenever you are approached by anyone to invest in something with your hard-earned money: if it is really such a hot, new thing, why do they need to hard-sell it to this extent?