NCS OFFICES Michelle Summers left Voice mail that I was notified and had two hours to reply, I only check messages on this number everyweek once per week, Florida

Briefly a company called my cell phone which I rarely use.  The only identified themselves as Michelle Summers@ NCS Services.  She threatened me that if I do not return a call  I would be visited by a process server.  Upon calling the number no one answers it is all automated.  So The only message I left is my home line and name.  I believe this is some sort of fraud as I pulled my credit report and there is no collections under my name and social on all three agencies.  There number is 877-925-8240.  Thank you for whatever help you can offer in regards to this company following unfair business practices.