For the last 2 weeks I've been getting spammed by sequential phone numbers from my phone number's area code (which I no longer live in same state either).
The numbers look like,
470-220-2708
470-220-2709
470-220-2710
470-220-2711
470-220-2712
...
470-220-2724
Every time I block and report the number but I don't really think the report does anything.
There was another 470 area code sequential phone number set that was also spamming me for a few days but those stopped.
If you’re expecting a call from some random person, just disable it temporarily.
For a land line, maybe something in between to intercept and block the calls, try to make up such thing; for a cell phone, to try to modify the software to add such a capability.
Of course there are problems with this, but these can be solved. Phone spam can't.