Does Anyone (agency) Investigate This #$%^& ?

I would
I got that one too, I asked which one did you catch 'cuz I got a few more if you need them.

Back when I was working, had a job that had mucho travel, setting in airports for hours. I would jump on those calls just to pass the time, mess around for nearly 20 minutes or so, I would play along like I was a moron, finally we would get to the credit card number, then I would give them some off the rack number, short a diget or two, go back over the credit card number with them time and time again, interchanging a diget, just changing things up,,was huge fun when they would give up and disconnect the call. Interesting, after a while my phone received none of those bogus calls.

So if you have the time, jack with those guys, get em hooked and on the line for time on end, won't be long and they will realize your number is wasting their time.

IDNKFS, but I am thinking that when you block your number, you are letting the obnoxious caller know that number is real, so they will continue to call and just use a different spoofed number. I think the best plan is to pick up and tie them up on a useless call, which they don't like or let the call go to voice mail, like the number is not monitored.