scam call regarding car warranty

Ms. Mason from Riesen Law Firm, urgent must call back. When you call back they ask "Who are you calling for" sounds like their in a subway.

This number keeps calling me and threatening to bring their people to my home and job if I don't send them a check for $320. They are saying I got a cash advance of line. They have all my info. and I got in contact with my bank and actual company they are saying I got the loan from and its a scam. They still continue to call me.

The caller tried the "missed call" method. Just let the phone ring for a short while, then hang up.

I received a call from the above number three times. Each time I answered the phone it was silent on the other end. I could also hear a clicking sound.

He called me and knew all my information. He asked me some questions about my date of birth and my home address and so on.

Took credit card information again after purchase online, to send free gas card and discount plans for $1.00, can be cancelled at anytime. Are these valid or just a way to wipe out my bank account?