(1) You can report DNC violations at https://complaints.donotcall.gov/complaint/complaintcheck.aspx . (2) Never press any numbers to be taken off a calling list, you are only verifying that yours is a live number and you get even more calls - just do not answer unknown callers and do not call them back. (3) Change the way you block numbers. Try blocking ranges of numbers like entire area codes. You'll use less blocking slots. Read you call blocker instruction manual-think outside the box. Good luck BA.
There are many many of these calls that do not seem to have someone on the line, or do not leave a message. I have to assume that some flunky is getting paid to make these calls, but is getting paid on the basis of how many calls get made, and not on the basis of how many people are actually talked to. If I were him or her, I'd just dial a zillion numbers, and hang up as soon as someone picks up the receiver. That would make it easier to dial more numbers. I block them all, but they keep coming.