A robocall from unknown - A search shows this number to be from Denver, Colorado. A land line using LEVEL 3 COMMUNICATIONS, LLC - CO with a spam score of 97%.
I received several calls from this number plus several other numbers from the same state and city (Denver, Colorado). The only thing you can do about it is add your number to the Do Not Call List. and you will have to wait 30 days for your number to be processed. After 30 days you can sue the company that continues to call you. Hanging up on them or telling them to never call you again will do nothing. You must add your number to the Do Not Call List..