I too got a message that sounded like siri asking me to call it back. I ignored it and looked it up and found.... It's a loan or cash advance compnay.. .wish they would stop.
The Do Not Call List law is a list of phone numbers where the owner does not want telemarketing calls and a law against calling those numbers. For a scammer its one more law to break.
Did you apply for a loan with these people?? That would be your answer as to is it real. I doubt it is. As soon as they ask YOU to pay upfront it is a SCAM!