Ugh, it’s such a pain, isn’t it? You should also gain online access to your ssn through mygov? I think it’s something like that. It’s fairly easy, and you can make sure someone isn’t using your ssn to collect benefits.
As for the spam calls, not sure what to do about that. Google your number and try to remove it everywhere it’s posted. But I equate that to the election cycle more than anything else, even if it’s not election related.
I block/report at least 3-10 per week lately, but I’ve gone months with nothing. It ebbs and flows..