Who called from 6185515539

Got a call from this number on my cell phone. Automated voice saying this is my last chance to lower my credit card rates and to press one for more information.  Just blocked the number on my iPhone (click recent calls, hit the info icon to the right of the phone number, scroll down and choose block this caller).

Threatened us with us treasury and a magistrate....no one uses that term in the states.  Same call from 3133637791 on our land line