Who called from 9807214123

Rec'd a call from this number today. Robocall about lowering credit card interest rate. No credit card or company named, and no option to stop calls.

My number is on the Do Not Call list but that does not stop these calls.

I'm on the Do Not Call List. They call. I do not answer. It appears as missed call. Totally unwelcome and unwanted.

Received a call about lowering interest rate. pressed 0 and got a live person and tried to get info from them but they hung up

Received call with recorded message, pressed one and the person that answer, when I asked for his name, hung up.  I tried calling back and get a recording that says this number has been disconnected.  
We are on the Do Not Call List, but it does not seem to help.

Hi, keep getting calls from my credit card...but not my credit card.. I don't want a lower intrest rate.. I do not pay intrest if I pay it every month.. so why are they calling.. and they said this was my last call.. of course I have heard that line a few times.. I just hang up... but it is annoying.