My mom (yup, still kicking in her 80's) loves it when these idiots call her.
She has no credit cards, doesn't use the internet, and has no email, so as soon as some scammer calls her on the phone and wants to "fix her broken computer," or "give her a lower interest rate" or needs to "verify her credit account" or sell her siding... she gives it to 'em with both barrels.
I think she lives for this stuff. She has a young voice, so she sounds like the typical young housewife, but she is also well read in murder mysteries and Poe and Shakespeare... she can cuss in ways that haven't even been imagined by sailors... Imagine "Macbeth" being thrown at you... GRIN.
She loves to tell the tales of the last scammer that called... and how even the "heavy breathers" hang up when she lets loose.
Guns a'blazin' mom, don't take no crap from the scammers.