The lowering your credit card interest scam has been around for years. I feel extremely sorry for anyone living in deplorable conditions. You never truly know what kind of person you are until you're faced with severe adversity. But, you're right, it doesn't make their sense of entitlement to make others' lives hell any less disgusting and despicable.
This 470-252-0837 called my home today, at 9:25AM, Caller ID said Triple V. I zap the number on 2nd ring, and blocked it. Triple V has also called from 240-800-9544 and 202-851-0561 in early Nov 2016, and I block those numbers also. Do not know who this is, but I am guessing it is a SCAM!!.
They also use 331-204-0079 and 208-600-1035. Same ID Triple V. They claim that they can lower your credit card interest rate. Sounds like a call center in the background. Avoid them.