Recently, my 90-year-old aunt received a phone call from someone claiming to be her grandson and that he was stranded in Mexico and needed money. Needless to say, she was very upset.
Please, do not fall for these scams. Do not offer them any information and the best thing to do is hang up. In this case she asked the caller if this was so and so (naming her grandson) and they, of course, said "yes." Do not offer them any personal information. If you are not sure if a call is legitimate, you ask the questions.
And above all, do not send any money. She had the presence of mind to tell them she did not have the money and of course at that point they hung up.
These people will stop at nothing to scam money from unsuspecting people -- mainly senior citizens, but no one is exempt. So beware.