They say the company is "CMA", a processor for credit card companies and want to give us a lower interest rate. In the past I have assumed they are generating leads for actual companies to later contact us. By using a marketing company, they may be able to avoid violating DNC and robo caller laws. If you provide information and are later contacted by a company, you should report THAT call to the FTC / DNC list as being connected with the original abuse.
But I am now wondering if they other message posters here are not correct about them scamming us out of our credit card information. I played along with the lady that answered and said I was interested. She wanted to make sure I had a valid credit card and asked me to read information from my card and statement. When I said I didn't have them with me she offered to call back. When I said she could give me her number, since I don't give out credit card information to people that CALL ME, she didn't say anything and hung up.
I think the scammers ARE getting more tricky, but we all need to keep reporting the abuse and scams to the Do-Not-Call list at 1-888-382-1222. It seems to take some time, but for the most part it does lessen or stop the junk calls.
And for those of you that want to mess with these people, you can try this: When you get an automated call, and have to hit a key to be connected, it works something like as if you called them. What that means is that the system that calls you then connects you to the scammer. And even if they hang up on you, your phone often stays connected and ties up one of their phone lines. Yes, you will hear a beep-beep-beep, but that is from their phone system trying to trick you into hanging up so they can free the line to make more calls. I left my phone on speaker for over an hour while working on my computer. I was able to tie up their line for that long. Finally I hung up, got their number with *69 and reported the call to the FTC.