Triad Financial Services Triad Financial Network Scam calls in an attempt to collect on a debt Internet

They are constantly calling and leaving messages on my phone in an attempt to  collect on a old debt that I don't know if it even exists anymore. They've even tried threatening to file legal papers, and even called and made harrassing calls to my parents! They never explain what this supposed debt is for and  I think it is a scam to collect money. I  never return their calls or answer the phone, or I will pick up and hang up the  phone immediately. They obviously don't know that I don't intend to ever call them back. And, I absolutely refuse to talk to them.