Just got a call this morning, they're pretending to be a travel agency this time around, the grift is they say you have unused vacation time/that you're a preferred customer and you only need to cover a small booking fee.
I've never used a travel agency in my life.
Decades ago back when the spam calls were nonstop; I recorded the greeting on my answering machine in perfect Spanish.
All my friends and family were in on the joke, but the spammers assumed it was a Spanish speaking household and the calls quickly dropped off afterwards.