If there was ever a public service job where I could receive scam reports, and trace every single scam text and call back to its source and take action against the gateway carriers allowing these scams to enter domestic copper, I would apply immediately. So much time, needless worry and anguish imposed on innocent people who simply want to trust a communication protocol that should be trustworthy.
Funny you mention that. I'd say based on personal recollection that in "public service" you'll likely find people in on the scams.
Former congressman from NOLA, Bill Jefferson, orchestrated scams involving securing minority-preferred business loans to found rural phone companies. Those rural phone companies would then pay him back by getting pre-arranged contracts from African countries like our phone scammer friends in Nigeria.
When hurricane Katrina hit, they found $90,000 in cash in his freezer. Was pretty close to the $100,000 in cash that the DOJ had videotaped him receiving from the Nigerian government's vice president a few days before.