What would you do if a group of strangers came to your house and needed help? How would you help them or how would you refuse them? What if they were sent by respected friend of your family?
actually if this situation ever happens, I would try to figure out who they are first especially that they are just strangers. as long as I can get much information about them... I will proceed to help them, but if I could think of a way to refuse... then I would ask my family to handle the situation instead.