and you allege the moneygram executives knew about this. >> the top executives of moneygram knew aboutevery time there is a wire transfer, the wire transfer company makes money. >> reporter: moneygram won't admit fault but paid $18 million to the federal government to settle the case. as for the victims, most never come forward, too embarrassed. >> it just takes the wind right out of your sails. >> reporter: but these grandparents are stepping up so you're not next. >> i was set. just totally violated. how could there be such rotten people out there that would do this to grandma, hope you're watching. experts say if you get one of these phone calls, call the grandchild and the parents. make sure it is legit with the real person before you send any money. by the way, moneygram has added staff and technology to protect consumers. >> just when you think people can't get any lower. this is a particularly bad scam for this scam. >> it is spring break right now so a lot of kids are really out of the country so it is more believable to grandparents, okay, they were in canada on spring break s