If they’re not people that you would ordinarily ask for money from, the simplest answer is to just make sure they understand that.

And that “you” asking for money out of the blue is suspicious.

For people in you immediate support system… they should know that there’s very few crisis that require immediate decisions and none of them need cash wired to foreign bank accounts or stashed on gift cards or in bitcoin.

And certainly not from an unknown number.

The focus there should be on verifying it’s you. (By hanging up and calling you direct.$