Order of location debt scam.

I keep getting a call about a debt. They say they’re with a group called Providence or maybe Sunlife I don’t know I could never get a straight answer, and represent a group of attorneys. They originally call from a local number saying they have an “order of location” and if I don’t respond to the 855 number I’ll be sued. When I talk to them they won’t give me a verification of debt or an address to request it in writing. They have my birthdate and last 4. Just curious if anyone has had any experience with this particular company. I have filed a complaint with the CFPB already.