Three tricksters at the gate

There were three stout Asians when I opened the door.
“Sir, we are from a charity organization. Any donation is welcome,” they pleaded.
I generally do not entertain such people, but felt I should offer something. “An unexperimented life is not worth it,” Socrates’ words echoed in this journalist’s mind. Let me check out how genuine they are, I told myself. After all, there is nothing worth robbing in my house and Sharjah is known to be a very safe place.
“I give you Dhs10,” I said, ignoring caution signals from my mind.
“Water please,” they entered my home.
“It is for a noble cause. We are helping poor people,” said one.
“Ok. I will give double the promised amount,” I offered.
After sipping water, they said, “Pay Dhs100.”
“One minute,” I replied and went to the nearby room keeping an eye on them. I picked up my mobile, and spoke in my mother tongue loudly and purposely mentioned “three people” in English.
“Sit, sit, what were you saying?” I asked them.
“Thank you, sir,” they barged out in a hurry thinking I had alerted someone.
PS: Never open the gate to a stranger.