I have recently received a message on Facebook from a former girlfriend that I had stopped seeing 17 years ago. It was a single sentence question inquiring if I was the person she had dated and dumped 17 years ago. It felt vengful to me so I deleted it without responding to the message. My father received a debt collection call for this woman the other day and as far as I know he has never met this woman. Should I be concerned about fraud or identity theft?