Pratham Foundation — fake ngo

Few days ago I received a call from a person claiming to be a representative of an NGO Pratham foundation. He asked for donation of a girl who is severely burned, I was driving then and I told him can't talk right now and I disconnected the phone. Then today I received a phone call from same person and I told him that I have certain budget for charity every 6 months and I have already done my part in some other way so I don't want to donate to your charity. He then arrogantly asked me that why you did not tell this to me the other day when I called you. And then when I shouted at him he started calling me that you are mad. I disconnected the call. Iam sure he is not from any foundation and some guys are running some money making racket. Otherswise such arrogance is not expected from people who seek donations