I keep getting calls from real estate agents ever since the day my old phone's SIM card reader gave up and my dad gave me one of the two phones he got from an offer from our service provider after his old one got stolen. My old phone number is still the one Social Security pairs with my identity. The phone number I currently have used to be someone else's. I know because these real estate agents keep mentioning a name. I COULD just block them, but that name is always on my mind and I need answers.