They became predatory from then on out. I tried to play around at first, messing with them and such. Then it became relentless and the blocking never seemed to work. Then I just switched to letting random numbers go to VM. That seemed to have cut off about 50% of robocalls over time. Then eventually I got a pixel phone. Just the call screening alone is worth it. I may get 1 or 2 random numbers calling me a month now. And I usually don't even know they called unless I look at my call log.
I am happy that trend is starting to be picked up by other phone makers. Good on the FCC for clamping down on this stuff. It has been a long term problem and there is still a lot more of these people out there. I hope they learned a lot and can utilize this knowledge in the future to shut more people down.