These comments were soooo interesting! My cell will say "unknown caller".... & it only rings 3 times, so guess I'm good?Once in a while I'll pick up up for the fun of it.... sometimes nothing. Have gotten several calls about my "student loan"... I'm 74 & have never, ever had a student loan. Only thing I can figure is, my cell phone is on my DIL's plan & she & my son have student loans.....