Once the relatives get wind of this, there is a simple solution. Get a new phone number for the person in question. And even more critical don't cancel the old one.
Put an answering machine on the old one, and have a "safe" relative check it every other day or so. Give the new phone number to family and friends.
After a few weeks of getting nothing but answering machine messages, the scammers will go away.
If the old number has been cancelled, the scammers know you're on to them. And look for the new number. If the old number still works, they won't look for a new number. Mostly.
Put an answering machine on the old one, and have a "safe" relative check it every other day or so. Give the new phone number to family and friends.
After a few weeks of getting nothing but answering machine messages, the scammers will go away.
If the old number has been cancelled, the scammers know you're on to them. And look for the new number. If the old number still works, they won't look for a new number. Mostly.