Your grandparents may have been subjected to something like scam #8 or scam #26
More information about those scams (and others) is at
http://phonehelp.2truth.com/facts.html
That site also shows how other 800notes visitors have reduced the number of telephone scams and telemarketing calls they receive. (And, a link to Amazon's phone blocker devices and apps is there).
Grandparents got a call from a man pretending to be me saying I was going to prison over a car crash and I had mass amounts of drugs on me. They wanted $7,500 from my grandparents to post my bail.
Your grandparents may have been subjected to something like scam #8 or scam #26
More information about those scams (and others) is at
http://phonehelp.2truth.com/facts.html
That site also shows how other 800notes visitors have reduced the number of telephone scams and telemarketing calls they receive. (And, a link to Amazon's phone blocker devices and apps is there).