Called left no message

Called and left no message

Called left no message. I called back it says the number is no longer in service.

Called no message

It's a call to supposedly lower your credit card interest rate and yes, it is a scam.
The person claims his name is David, but has a strong accent, and when you tell them you have no credit card, he laughs and hangs up.
You try to call back, and get an automated recording saying the number is no longer in service.