RI is a fist for me with these stupid calls usually they call from: NY, CA, FL, WY, KS, and, oh yes, and PA. Got 27 calls one month about lowering my interest rate from PA and there was nothing my phone service could do about it... Go figure!
Give them the info from a credit card you no longer use. Tell them you have to go get it (it should be right here!). Play with them -- waste their time. It's the one thing they can't stand. They'll stop calling you. Don't ask any questions, but don't give them any legitimate info. Credit card numbers use sequences that are chosen to immediately test if the number is "made up" so give them the digits on a real, closed account. Or just tell them you're still looking for your bill or a card.
They called my cell 10/01 at 12:41 Pacific. The "Mr. Number" app showed it as suspected spam so I let it go to voicemail and they did not leave a message.