I don't get cruise sales calls -- I get calls for carpet cleaning, construction contracting, phony IRS agents, and phony credit agencies. I suspect many are calling from foreign countries. They obviously aren't deterred one whit by US laws or agencies. I just use a box to screen everything unless it's on a whitelist. And blacklisted calls get a disconnected number signal. For the most part, problem solved but I can see from the call logs who's tried and what scam they are pulling by googling the number. What I wonder is, why haven't we seen a massive bust of robocall scammers by the FBI? A couple of reasons-- one, they're not in the US, two, they're paying for the call, so the phone company is making money off them, and three, rich people are mostly unaffected by and/or oblivious of the problem.