Do not call  you are harassing me !!! You have no rights ti keep calling !  

Received a message from this number, identified the company as FMS Financial Solutions.  I don't have any outstanding accounts so I have no idea what this is.

If they want to speak with me they need to leave their name, the name of their company and the reason for the call. I will call back, if only to say don't call again. Leaving a message that it is to my benefit to call some random number does not inspire me to return the call.

This is a collections agency. The first time I spoke with someone, I didn't know about the outstanding bill and I said I would need to verify with my insurance. After that their reps started calling every day and leaving voicemails. The last time I actually spoke with a rep, he said they have tried to collect money from me for two years and their next step would be to involve law enforcement. He also told me the amount I owed was $50 over the actual amount.

They called my cell and asked for me.  Because I didn't recognize the number I replied, "May I ask who's calling?"  They hung up.