I think a processor visited my home in CO

When I left for work this morning there was a business card stuck in the driver side window.Front of business card had printed: Accurate Legal Support Services, LLC had address of the business, say they do -Process Service, Skip Trace and Court Records, and the name Rob Stewart and phone # hand written. Back of business card had a hand written note: Please call Rob@720-675-3692 this is an Urgent Matter, if you do not call this Matter will be turned over the Sherriff.I???m not sure what to do. I???ve had some collection agency contact me in the past, but I just haven???t had the money to even negotiate with them. Just need some advice on what to do, very nervous and frustrated. Any help would be appreciated.