Person called claiming to be from what sounded like he said unicef. When I asked him to spell it he got annoyed and had to think about it. He spelled it out U N I S E F. He said he needed to verify the last four digits of my social security number and my address and said the have been trying to contact me for several years. I asked him what he needed it for and his response was “we need all of your information†I said I’m not going to give it to you and I hung up.