They called me on my signal ring (fax) number.  I wonder how they got it, since I only give it out to a select group.  I get frequent nuisance calls from area code (757) w/ prefix 453; ALL of which are scams or schemes, that are not worthy of bothering with.  I believe that it is a cadre that keep changing their last four digits as an evasion tactic in order to avoid being blocked and to get around the NDNCR.