Recorded message tries to hook you by saying there is nothing wrong with your account but its urgent that you call them.  They also mention your low interest rate is about to expire.  I pressed 9 as per the recording and got "Melissa" who said they were "Account Services" representing Visa and Mastercard.  She had no idea what any specific cards were, had no phone number for her company, and would not give me her last name.  I reported them to the National and State Do Not Call Registries.

this number keeps calling and hanging up and the research on this number indicates they are con artists

This number just called and when call answered they hung up.

THIS NUMBER 1 212 000 2943 CALLED MY ID HUNG UP

Recorded dialer(Rachael) calls an say to lower your interest rate press 9
and a person answers the phone, I told them I was going to file a complaint against them for fraudulent calls, she said OK an hung up.