they said they work for visa and mastercard but when u ask more question they hangup

these motherf(*&ing jerks keep calling and keep calling, and its always about some sort of "credit bureau" concern or credit cards about to "expire", and yet, when you try to call them back, the line simply busys out and you can not call in, if i find these people i will bury them in litigation to the point i bury the business permanently.

Found on my caller id

called 3 times in 2 hours. went to voicemail. didn't leave a message. very annoying.

I receive numerous calls from this number with an automated message about some bogus way to reduce your credit card interest. Funny as I don't have a credit card in my name. Either way, this is the 8th phone call from this number and I am on the National Do Not Call List. I pressed 1 this time to be connected so I could tell them to remove me. They of course just hung up on me. Is there anything I can do? Worse part is I already have an unlisted number.